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111 vulnerabilities by Go standard library
CVE-2026-42507 (GCVE-0-2026-42507)
Vulnerability from cvelistv5 – Published: 2026-06-02 22:01 – Updated: 2026-06-03 19:04
VLAI
Title
Arbitrary inputs are included in errors without any escaping in net/textproto
Summary
When returning errors, functions in the net/textproto package would include its input as part of the error. This might allow an attacker to inject misleading content to errors that are printed or logged.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-532 - Insertion of Sensitive Information into Log File
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | net/textproto |
Affected:
0 , < 1.25.11
(semver)
Affected: 1.26.0-0 , < 1.26.4 (semver) |
{
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},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
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{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "net/textproto",
"product": "net/textproto",
"programRoutines": [
{
"name": "parseCodeLine"
},
{
"name": "Reader.ReadCodeLine"
},
{
"name": "readMIMEHeader"
},
{
"name": "Error.Error"
},
{
"name": "Reader.ReadMIMEHeader"
},
{
"name": "Reader.ReadResponse"
}
],
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},
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"url": "https://go.dev/cl/777060"
},
{
"url": "https://groups.google.com/g/golang-announce/c/tKs3rmcBcKw"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-5039"
}
],
"title": "Arbitrary inputs are included in errors without any escaping in net/textproto"
}
},
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"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2026-42504 (GCVE-0-2026-42504)
Vulnerability from cvelistv5 – Published: 2026-06-02 22:01 – Updated: 2026-06-17 00:11
VLAI
Title
Quadratic complexity in WordDecoder.DecodeHeader in mime
Summary
Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | mime |
Affected:
0 , < 1.25.11
(semver)
Affected: 1.26.0-0 , < 1.26.4 (semver) |
Credits
{
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],
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"collectionURL": "https://pkg.go.dev",
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"packageName": "mime",
"product": "mime",
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"name": "WordDecoder.DecodeHeader"
}
],
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"lessThan": "1.25.11",
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{
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"version": "1.26.0-0",
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}
]
}
],
"credits": [
{
"lang": "en",
"value": "p4p3r (https://hackerone.com/p4p3r_hak)"
}
],
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"url": "https://go.dev/cl/774481"
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"url": "https://groups.google.com/g/golang-announce/c/tKs3rmcBcKw"
},
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"url": "https://pkg.go.dev/vuln/GO-2026-5038"
}
],
"title": "Quadratic complexity in WordDecoder.DecodeHeader in mime"
}
},
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CVE-2026-27145 (GCVE-0-2026-27145)
Vulnerability from cvelistv5 – Published: 2026-06-02 22:01 – Updated: 2026-06-04 12:34
VLAI
Title
Inefficient candidate hostname parsing in crypto/x509
Summary
(*x509.Certificate).VerifyHostname previously called matchHostnames in a loop over all DNS Subject Alternative Name (SAN) entries. This caused strings.Split(host, ".") to execute repeatedly on the same input hostname. With a large DNS SAN list, verification costs scaled quadratically based on the number of SAN entries multiplied by the hostname's label count. Because x509.Verify validates hostnames before building the certificate chain, this overhead occurred even for untrusted certificates.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | crypto/x509 |
Affected:
0 , < 1.25.11
(semver)
Affected: 1.26.0-0 , < 1.26.4 (semver) |
Credits
{
"containers": {
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"cna": {
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"collectionURL": "https://pkg.go.dev",
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"product": "crypto/x509",
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{
"name": "HostnameError.Error"
},
{
"name": "matchHostnames"
},
{
"name": "Certificate.Verify"
},
{
"name": "Certificate.VerifyHostname"
}
],
"vendor": "Go standard library",
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}
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"description": "CWE-407: Inefficient Algorithmic Complexity",
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"url": "https://go.dev/cl/783621"
},
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"url": "https://go.dev/issue/79694"
},
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"url": "https://groups.google.com/g/golang-announce/c/tKs3rmcBcKw"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-5037"
}
],
"title": "Inefficient candidate hostname parsing in crypto/x509"
}
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CVE-2026-39820 (GCVE-0-2026-39820)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 14:27
VLAI
Title
Quadratic string concatentation in consumeComment in net/mail
Summary
Well-crafted inputs reaching ParseAddress, ParseAddressList, and ParseDate were able to trigger excessive CPU exhaustion and memory allocations.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | net/mail |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
Credits
{
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}
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"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "net/mail",
"product": "net/mail",
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{
"name": "addrParser.consumeComment"
},
{
"name": "AddressParser.Parse"
},
{
"name": "AddressParser.ParseList"
},
{
"name": "Header.AddressList"
},
{
"name": "Header.Date"
},
{
"name": "ParseAddress"
},
{
"name": "ParseAddressList"
},
{
"name": "ParseDate"
}
],
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"lessThan": "1.25.10",
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"versionType": "semver"
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"value": "thatnealpatel"
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"description": "CWE-407: Inefficient Algorithmic Complexity",
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}
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],
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"url": "https://go.dev/issue/78566"
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"url": "https://go.dev/cl/759940"
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"url": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M"
},
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"url": "https://pkg.go.dev/vuln/GO-2026-4986"
}
],
"title": "Quadratic string concatentation in consumeComment in net/mail"
}
},
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CVE-2026-39823 (GCVE-0-2026-39823)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 14:05
VLAI
Title
Bypass of meta content URL escaping causes XSS in html/template
Summary
CVE-2026-27142 fixed a vulnerability in which URLs were not correctly escaped inside of a <meta> tag's <content> attribute. If the URL content were to insert ASCII whitespaces around the '=' rune inside of the <content> attribute, the escaper would fail to similarly escape it, leading to XSS.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | html/template |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
Credits
{
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "html/template",
"product": "html/template",
"programRoutines": [
{
"name": "tMetaContent"
},
{
"name": "Template.Execute"
},
{
"name": "Template.ExecuteTemplate"
}
],
"vendor": "Go standard library",
"versions": [
{
"lessThan": "1.25.10",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "1.26.3",
"status": "affected",
"version": "1.26.0-0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Samy Ghannad"
}
],
"descriptions": [
{
"lang": "en",
"value": "CVE-2026-27142 fixed a vulnerability in which URLs were not correctly escaped inside of a \u003cmeta\u003e tag\u0027s \u003ccontent\u003e attribute. If the URL content were to insert ASCII whitespaces around the \u0027=\u0027 rune inside of the \u003ccontent\u003e attribute, the escaper would fail to similarly escape it, leading to XSS."
}
],
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{
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{
"description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
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}
]
}
],
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"shortName": "Go"
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"url": "https://go.dev/issue/78913"
},
{
"url": "https://go.dev/cl/769920"
},
{
"url": "https://groups.google.com/g/golang-announce/c/qcCIEXso47M"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-4982"
}
],
"title": "Bypass of meta content URL escaping causes XSS in html/template"
}
},
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CVE-2026-33811 (GCVE-0-2026-33811)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 14:25
VLAI
Title
Crash when handling long CNAME response in net
Summary
When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-415 - Double Free
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | net |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
Credits
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CVE-2026-39826 (GCVE-0-2026-39826)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 14:05
VLAI
Title
Escaper bypass leads to XSS in html/template
Summary
If a trusted template author were to write a <script> tag containing an empty 'type' attribute or a 'type' attribute with an ASCII whitespace, the execution of the template would incorrectly escape any data passed into the <script> block.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | html/template |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
Credits
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CVE-2026-42499 (GCVE-0-2026-42499)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 21:29
VLAI
Title
Quadratic string concatenation in consumePhrase in net/mail
Summary
Pathological inputs could cause DoS through consumePhrase when parsing an email address according to RFC 5322.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | net/mail |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
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},
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"name": "ParseAddressList"
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CVE-2026-39825 (GCVE-0-2026-39825)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 21:30
VLAI
Title
ReverseProxy forwards queries with more than urlmaxqueryparams parameters in net/http/httputil
Summary
ReverseProxy can forward queries containing parameters not visible to Rewrite functions. When used with a Rewrite function, or a Director function which parses query parameters, ReverseProxy sanitizes the forwarded request to remove query parameters which are not parsed by url.ParseQuery. ReverseProxy does not take ParseQuery's limit on the total number of query parameters (controlled by GODEBUG=urlmaxqueryparams=N) into account. This can permit ReverseProxy to forward a request containing a query parameter that is not visible to the Rewrite function. For example, the query "a1=x&a2=x&...&a10000=x&hidden=y" can forward the parameter "hidden=y" while hiding it from the proxy's Rewrite function.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | net/http/httputil |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
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CVE-2026-39836 (GCVE-0-2026-39836)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 21:30
VLAI
Title
Panic in Dial and LookupPort when handling NUL byte on Windows in net
Summary
The Dial and LookupPort functions panic on Windows when provided with an input containing a NUL (0).
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-248 - Uncaught Exception
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | net |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
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},
{
"name": "Resolver.lookupTXT"
},
{
"name": "Resolver.lookupNS"
},
{
"name": "Resolver.lookupMX"
},
{
"name": "Resolver.lookupSRV"
},
{
"name": "Dial"
},
{
"name": "DialTimeout"
},
{
"name": "Dialer.Dial"
},
{
"name": "Dialer.DialContext"
},
{
"name": "Listen"
},
{
"name": "ListenConfig.Listen"
},
{
"name": "ListenConfig.ListenPacket"
},
{
"name": "ListenPacket"
},
{
"name": "LookupAddr"
},
{
"name": "LookupCNAME"
},
{
"name": "LookupHost"
},
{
"name": "LookupIP"
},
{
"name": "LookupMX"
},
{
"name": "LookupNS"
},
{
"name": "LookupPort"
},
{
"name": "LookupSRV"
},
{
"name": "LookupTXT"
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"name": "ResolveIPAddr"
},
{
"name": "ResolveTCPAddr"
},
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"name": "ResolveUDPAddr"
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{
"name": "Resolver.LookupNS"
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"lang": "en",
"value": "The Dial and LookupPort functions panic on Windows when provided with an input containing a NUL (0)."
}
],
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"descriptions": [
{
"description": "CWE-248: Uncaught Exception",
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CVE-2026-33814 (GCVE-0-2026-33814)
Vulnerability from cvelistv5 – Published: 2026-05-07 19:41 – Updated: 2026-05-08 18:01
VLAI
Title
Infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE in net/http/internal/http2 in golang.org/x/net
Summary
When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGS_MAX_FRAME_SIZE with a value of 0.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| golang.org/x/net | golang.org/x/net/http2 |
Affected:
0 , < 0.53.0
(semver)
|
|
| Go standard library | net/http |
Affected:
0 , < 1.25.10
(semver)
Affected: 1.26.0-0 , < 1.26.3 (semver) |
Credits
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CVE-2026-32280 (GCVE-0-2026-32280)
Vulnerability from cvelistv5 – Published: 2026-04-08 01:06 – Updated: 2026-04-08 17:46
VLAI
Title
Unexpected work during chain building in crypto/x509
Summary
During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyOptions.Intermediates, which can lead to a denial of service. This affects both direct users of crypto/x509 and users of crypto/tls.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | crypto/x509 |
Affected:
0 , < 1.25.9
(semver)
Affected: 1.26.0-0 , < 1.26.2 (semver) |
Credits
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CVE-2026-32281 (GCVE-0-2026-32281)
Vulnerability from cvelistv5 – Published: 2026-04-08 01:06 – Updated: 2026-04-13 18:19
VLAI
Title
Inefficient policy validation in crypto/x509
Summary
Validating certificate chains which use policies is unexpectedly inefficient when certificates in the chain contain a very large number of policy mappings, possibly causing denial of service. This only affects validation of otherwise trusted certificate chains, issued by a root CA in the VerifyOptions.Roots CertPool, or in the system certificate pool.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | crypto/x509 |
Affected:
0 , < 1.25.9
(semver)
Affected: 1.26.0-0 , < 1.26.2 (semver) |
Credits
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CVE-2026-32283 (GCVE-0-2026-32283)
Vulnerability from cvelistv5 – Published: 2026-04-08 01:06 – Updated: 2026-04-13 18:19
VLAI
Title
Unauthenticated TLS 1.3 KeyUpdate record can cause persistent connection retention and DoS in crypto/tls
Summary
If one side of the TLS connection sends multiple key update messages post-handshake in a single record, the connection can deadlock, causing uncontrolled consumption of resources. This can lead to a denial of service. This only affects TLS 1.3.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-667 - Improper Locking
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | crypto/tls |
Affected:
0 , < 1.25.9
(semver)
Affected: 1.26.0-0 , < 1.26.2 (semver) |
Credits
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},
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},
{
"name": "serverHandshakeStateTLS13.sendServerParameters"
},
{
"name": "serverHandshakeStateTLS13.readClientFinished"
},
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},
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"name": "Dialer.Dial"
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],
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CVE-2026-32288 (GCVE-0-2026-32288)
Vulnerability from cvelistv5 – Published: 2026-04-08 01:06 – Updated: 2026-04-13 18:20
VLAI
Title
Unbounded allocation for old GNU sparse in archive/tar
Summary
tar.Reader can allocate an unbounded amount of memory when reading a maliciously-crafted archive containing a large number of sparse regions encoded in the "old GNU sparse map" format.
Severity
5.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | archive/tar |
Affected:
0 , < 1.25.9
(semver)
Affected: 1.26.0-0 , < 1.26.2 (semver) |
Credits
{
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},
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CVE-2026-33810 (GCVE-0-2026-33810)
Vulnerability from cvelistv5 – Published: 2026-04-08 01:06 – Updated: 2026-04-20 17:23
VLAI
Title
Case-sensitive excludedSubtrees name constraints cause Auth Bypass in crypto/x509
Summary
When verifying a certificate chain containing excluded DNS constraints, these constraints are not correctly applied to wildcard DNS SANs which use a different case than the constraint. This only affects validation of otherwise trusted certificate chains, issued by a root CA in the VerifyOptions.Roots CertPool, or in the system certificate pool.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | crypto/x509 |
Affected:
1.26.0-0 , < 1.26.2
(semver)
|
Credits
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"url": "http://www.openwall.com/lists/oss-security/2026/04/20/1"
}
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{
"name": "newDNSConstraints"
},
{
"name": "dnsConstraints.query"
},
{
"name": "Certificate.Verify"
}
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CVE-2026-32289 (GCVE-0-2026-32289)
Vulnerability from cvelistv5 – Published: 2026-04-08 01:06 – Updated: 2026-04-13 18:20
VLAI
Title
JsBraceDepth Context Tracking Bugs (XSS) in html/template
Summary
Context was not properly tracked across template branches for JS template literals, leading to possibly incorrect escaping of content when branches were used. Additionally template actions within JS template literals did not properly track the brace depth, leading to incorrect escaping being applied. These issues could cause actions within JS template literals to be incorrectly or improperly escaped, leading to XSS vulnerabilities.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | html/template |
Affected:
0 , < 1.25.9
(semver)
Affected: 1.26.0-0 , < 1.26.2 (semver) |
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"packageName": "html/template",
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"name": "context.String"
},
{
"name": "context.mangle"
},
{
"name": "escaper.escapeBranch"
},
{
"name": "Error.Error"
},
{
"name": "HTMLEscaper"
},
{
"name": "JSEscape"
},
{
"name": "JSEscapeString"
},
{
"name": "JSEscaper"
},
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"name": "ParseFS"
},
{
"name": "ParseFiles"
},
{
"name": "ParseGlob"
},
{
"name": "Template.AddParseTree"
},
{
"name": "Template.Clone"
},
{
"name": "Template.DefinedTemplates"
},
{
"name": "Template.Execute"
},
{
"name": "Template.ExecuteTemplate"
},
{
"name": "Template.Funcs"
},
{
"name": "Template.Parse"
},
{
"name": "Template.ParseFS"
},
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"name": "Template.ParseFiles"
},
{
"name": "Template.ParseGlob"
},
{
"name": "URLQueryEscaper"
}
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}
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"description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
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},
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CVE-2026-32282 (GCVE-0-2026-32282)
Vulnerability from cvelistv5 – Published: 2026-04-08 01:06 – Updated: 2026-04-13 18:20
VLAI
Title
TOCTOU permits root escape on Linux via Root.Chmod in os in internal/syscall/unix
Summary
On Linux, if the target of Root.Chmod is replaced with a symlink while the chmod operation is in progress, Chmod can operate on the target of the symlink, even when the target lies outside the root. The Linux fchmodat syscall silently ignores the AT_SYMLINK_NOFOLLOW flag, which Root.Chmod uses to avoid symlink traversal. Root.Chmod checks its target before acting and returns an error if the target is a symlink lying outside the root, so the impact is limited to cases where the target is replaced with a symlink between the check and operation.
Severity
6.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-61 - UNIX Symbolic Link (Symlink) Following
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | internal/syscall/unix |
Affected:
0 , < 1.25.9
(semver)
Affected: 1.26.0-0 , < 1.26.2 (semver) |
Credits
{
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],
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"version": "0",
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"lang": "en",
"value": "Uuganbayar Lkhamsuren (https://github.com/uug4na)"
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}
],
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"lang": "en"
}
]
}
],
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"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
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"url": "https://go.dev/cl/763761"
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{
"url": "https://go.dev/issue/78293"
},
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"url": "https://groups.google.com/g/golang-announce/c/0uYbvbPZRWU"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-4864"
}
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CVE-2026-27142 (GCVE-0-2026-27142)
Vulnerability from cvelistv5 – Published: 2026-03-06 21:28 – Updated: 2026-03-16 15:21
VLAI
Title
URLs in meta content attribute actions are not escaped in html/template
Summary
Actions which insert URLs into the content attribute of HTML meta tags are not escaped. This can allow XSS if the meta tag also has an http-equiv attribute with the value "refresh". A new GODEBUG setting has been added, htmlmetacontenturlescape, which can be used to disable escaping URLs in actions in the meta content attribute which follow "url=" by setting htmlmetacontenturlescape=0.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | html/template |
Affected:
0 , < 1.25.8
(semver)
Affected: 1.26.0-0 , < 1.26.1 (semver) |
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.1,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "NONE",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
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"defaultStatus": "unaffected",
"packageName": "html/template",
"product": "html/template",
"programRoutines": [
{
"name": "tTag"
},
{
"name": "escaper.escapeAction"
},
{
"name": "Template.Execute"
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{
"name": "Template.ExecuteTemplate"
}
],
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"lang": "en",
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}
],
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"descriptions": [
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"description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
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"url": "https://go.dev/cl/752081"
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CVE-2026-27139 (GCVE-0-2026-27139)
Vulnerability from cvelistv5 – Published: 2026-03-06 21:28 – Updated: 2026-03-09 14:53
VLAI
Title
FileInfo can escape from a Root in os
Summary
On Unix platforms, when listing the contents of a directory using File.ReadDir or File.Readdir the returned FileInfo could reference a file outside of the Root in which the File was opened. The impact of this escape is limited to reading metadata provided by lstat from arbitrary locations on the filesystem without permitting reading or writing files outside the root.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-363 - Race Condition Enabling Link Following
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | os |
Affected:
0 , < 1.25.8
(semver)
Affected: 1.26.0-0 , < 1.26.1 (semver) |
Credits
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"url": "https://go.dev/cl/749480"
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CVE-2026-25679 (GCVE-0-2026-25679)
Vulnerability from cvelistv5 – Published: 2026-03-06 21:28 – Updated: 2026-03-10 13:37
VLAI
Title
Incorrect parsing of IPv6 host literals in net/url
Summary
url.Parse insufficiently validated the host/authority component and accepted some invalid URLs.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1286 - Improper Validation of Syntactic Correctness of Input
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | net/url |
Affected:
0 , < 1.25.8
(semver)
Affected: 1.26.0-0 , < 1.26.1 (semver) |
Credits
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},
{
"name": "JoinPath"
},
{
"name": "Parse"
},
{
"name": "ParseRequestURI"
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{
"name": "URL.Parse"
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}
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CVE-2026-27138 (GCVE-0-2026-27138)
Vulnerability from cvelistv5 – Published: 2026-03-06 21:28 – Updated: 2026-03-10 13:35
VLAI
Title
Panic in name constraint checking for malformed certificates in crypto/x509
Summary
Certificate verification can panic when a certificate in the chain has an empty DNS name and another certificate in the chain has excluded name constraints. This can crash programs that are either directly verifying X.509 certificate chains, or those that use TLS.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1285 - Improper Validation of Specified Index, Position, or Offset in Input
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | crypto/x509 |
Affected:
1.26.0-0 , < 1.26.1
(semver)
|
Credits
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CVE-2026-27137 (GCVE-0-2026-27137)
Vulnerability from cvelistv5 – Published: 2026-03-06 21:28 – Updated: 2026-03-10 13:32
VLAI
Title
Incorrect enforcement of email constraints in crypto/x509
Summary
When verifying a certificate chain which contains a certificate containing multiple email address constraints which share common local portions but different domain portions, these constraints will not be properly applied, and only the last constraint will be considered.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | crypto/x509 |
Affected:
1.26.0-0 , < 1.26.1
(semver)
|
Credits
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},
{
"name": "emailConstraints.query"
},
{
"name": "checkConstraints"
},
{
"name": "checkChainConstraints"
},
{
"name": "parseMailboxes"
},
{
"name": "Certificate.Verify"
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CVE-2025-68121 (GCVE-0-2025-68121)
Vulnerability from cvelistv5 – Published: 2026-02-05 17:48 – Updated: 2026-04-29 13:29
VLAI
Title
Unexpected session resumption in crypto/tls
Summary
During session resumption in crypto/tls, if the underlying Config has its ClientCAs or RootCAs fields mutated between the initial handshake and the resumed handshake, the resumed handshake may succeed when it should have failed. This may happen when a user calls Config.Clone and mutates the returned Config, or uses Config.GetConfigForClient. This can cause a client to resume a session with a server that it would not have resumed with during the initial handshake, or cause a server to resume a session with a client that it would not have resumed with during the initial handshake.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | crypto/tls |
Affected:
0 , < 1.24.13
(semver)
Affected: 1.25.0-0 , < 1.25.7 (semver) Affected: 1.26.0-rc.1 , < 1.26.0-rc.3 (semver) |
Credits
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"name": "Conn.handshakeContext"
},
{
"name": "Conn.Handshake"
},
{
"name": "Conn.HandshakeContext"
},
{
"name": "Conn.Read"
},
{
"name": "Conn.Write"
},
{
"name": "Dial"
},
{
"name": "DialWithDialer"
},
{
"name": "Dialer.Dial"
},
{
"name": "Dialer.DialContext"
},
{
"name": "QUICConn.Start"
}
],
"vendor": "Go standard library",
"versions": [
{
"lessThan": "1.24.13",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "1.25.7",
"status": "affected",
"version": "1.25.0-0",
"versionType": "semver"
},
{
"lessThan": "1.26.0-rc.3",
"status": "affected",
"version": "1.26.0-rc.1",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Coia Prant (github.com/rbqvq)"
},
{
"lang": "en",
"value": "Go Security Team"
}
],
"descriptions": [
{
"lang": "en",
"value": "During session resumption in crypto/tls, if the underlying Config has its ClientCAs or RootCAs fields mutated between the initial handshake and the resumed handshake, the resumed handshake may succeed when it should have failed. This may happen when a user calls Config.Clone and mutates the returned Config, or uses Config.GetConfigForClient. This can cause a client to resume a session with a server that it would not have resumed with during the initial handshake, or cause a server to resume a session with a client that it would not have resumed with during the initial handshake."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-295: Improper Certificate Validation",
"lang": "en"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-02-05T17:48:44.141Z",
"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"shortName": "Go"
},
"references": [
{
"url": "https://groups.google.com/g/golang-announce/c/K09ubi9FQFk"
},
{
"url": "https://go.dev/cl/737700"
},
{
"url": "https://go.dev/issue/77217"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-4337"
}
],
"title": "Unexpected session resumption in crypto/tls"
}
},
"cveMetadata": {
"assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"assignerShortName": "Go",
"cveId": "CVE-2025-68121",
"datePublished": "2026-02-05T17:48:44.141Z",
"dateReserved": "2025-12-15T16:48:04.451Z",
"dateUpdated": "2026-04-29T13:29:25.582Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2025-22873 (GCVE-0-2025-22873)
Vulnerability from cvelistv5 – Published: 2026-02-04 23:05 – Updated: 2026-02-05 15:03
VLAI
Title
Improper access to parent directory of root in os
Summary
It was possible to improperly access the parent directory of an os.Root by opening a filename ending in "../". For example, Root.Open("../") would open the parent directory of the Root. This escape only permits opening the parent directory itself, not ancestors of the parent or files contained within the parent.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-23 - Relative Path Traversal
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | os |
Affected:
0 , < 1.23.9
(semver)
Affected: 1.24.0-0 , < 1.24.3 (semver) |
Credits
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2026-02-04T23:08:02.625Z",
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"url": "http://www.openwall.com/lists/oss-security/2025/05/06/2"
}
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"cvssV3_1": {
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"attackVector": "LOCAL",
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"version": "3.1"
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "os",
"product": "os",
"programRoutines": [
{
"name": "splitPathInRoot"
},
{
"name": "checkPathEscapesInternal"
},
{
"name": "doInRoot"
}
],
"vendor": "Go standard library",
"versions": [
{
"lessThan": "1.23.9",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "1.24.3",
"status": "affected",
"version": "1.24.0-0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Dan Sebastian Thrane of SDU eScience Center"
}
],
"descriptions": [
{
"lang": "en",
"value": "It was possible to improperly access the parent directory of an os.Root by opening a filename ending in \"../\". For example, Root.Open(\"../\") would open the parent directory of the Root. This escape only permits opening the parent directory itself, not ancestors of the parent or files contained within the parent."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-23: Relative Path Traversal",
"lang": "en"
}
]
}
],
"providerMetadata": {
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"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"shortName": "Go"
},
"references": [
{
"url": "https://go.dev/cl/670036"
},
{
"url": "https://go.dev/issue/73555"
},
{
"url": "https://groups.google.com/g/golang-announce/c/UZoIkUT367A/m/5WDxKizJAQAJ"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-4403"
}
],
"title": "Improper access to parent directory of root in os"
}
},
"cveMetadata": {
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"datePublished": "2026-02-04T23:05:24.803Z",
"dateReserved": "2025-01-08T19:11:42.835Z",
"dateUpdated": "2026-02-05T15:03:55.451Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2025-61728 (GCVE-0-2025-61728)
Vulnerability from cvelistv5 – Published: 2026-01-28 19:30 – Updated: 2026-01-29 18:30
VLAI
Title
Excessive CPU consumption when building archive index in archive/zip
Summary
archive/zip uses a super-linear file name indexing algorithm that is invoked the first time a file in an archive is opened. This can lead to a denial of service when consuming a maliciously constructed ZIP archive.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-407 - Inefficient Algorithmic Complexity
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | archive/zip |
Affected:
0 , < 1.24.12
(semver)
Affected: 1.25.0 , < 1.25.6 (semver) |
Credits
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2026-01-28T20:08:22.055Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"url": "http://www.openwall.com/lists/oss-security/2026/01/15/4"
}
],
"title": "CVE Program Container"
},
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2025-61728",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-01-29T18:29:58.068724Z",
"version": "2.0.3"
},
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}
}
],
"providerMetadata": {
"dateUpdated": "2026-01-29T18:30:24.487Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "archive/zip",
"product": "archive/zip",
"programRoutines": [
{
"name": "Reader.initFileList"
},
{
"name": "Reader.Open"
}
],
"vendor": "Go standard library",
"versions": [
{
"lessThan": "1.24.12",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "1.25.6",
"status": "affected",
"version": "1.25.0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Jakub Ciolek"
}
],
"descriptions": [
{
"lang": "en",
"value": "archive/zip uses a super-linear file name indexing algorithm that is invoked the first time a file in an archive is opened. This can lead to a denial of service when consuming a maliciously constructed ZIP archive."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-407: Inefficient Algorithmic Complexity",
"lang": "en"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-01-28T19:30:31.354Z",
"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"shortName": "Go"
},
"references": [
{
"url": "https://go.dev/cl/736713"
},
{
"url": "https://go.dev/issue/77102"
},
{
"url": "https://groups.google.com/g/golang-announce/c/Vd2tYVM8eUc"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-4342"
}
],
"title": "Excessive CPU consumption when building archive index in archive/zip"
}
},
"cveMetadata": {
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"dateReserved": "2025-09-30T15:05:03.605Z",
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"state": "PUBLISHED"
},
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CVE-2025-61726 (GCVE-0-2025-61726)
Vulnerability from cvelistv5 – Published: 2026-01-28 19:30 – Updated: 2026-01-29 18:31
VLAI
Title
Memory exhaustion in query parameter parsing in net/url
Summary
The net/url package does not set a limit on the number of query parameters in a query. While the maximum size of query parameters in URLs is generally limited by the maximum request header size, the net/http.Request.ParseForm method can parse large URL-encoded forms. Parsing a large form containing many unique query parameters can cause excessive memory consumption.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | net/url |
Affected:
0 , < 1.24.12
(semver)
Affected: 1.25.0 , < 1.25.6 (semver) |
Credits
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2025-61726",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-01-29T18:31:39.150633Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-01-29T18:31:59.685Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "net/url",
"product": "net/url",
"programRoutines": [
{
"name": "parseQuery"
},
{
"name": "ParseQuery"
},
{
"name": "URL.Query"
}
],
"vendor": "Go standard library",
"versions": [
{
"lessThan": "1.24.12",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "1.25.6",
"status": "affected",
"version": "1.25.0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "jub0bs"
}
],
"descriptions": [
{
"lang": "en",
"value": "The net/url package does not set a limit on the number of query parameters in a query. While the maximum size of query parameters in URLs is generally limited by the maximum request header size, the net/http.Request.ParseForm method can parse large URL-encoded forms. Parsing a large form containing many unique query parameters can cause excessive memory consumption."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-400: Uncontrolled Resource Consumption",
"lang": "en"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-01-28T19:30:31.215Z",
"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"shortName": "Go"
},
"references": [
{
"url": "https://go.dev/cl/736712"
},
{
"url": "https://go.dev/issue/77101"
},
{
"url": "https://groups.google.com/g/golang-announce/c/Vd2tYVM8eUc"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-4341"
}
],
"title": "Memory exhaustion in query parameter parsing in net/url"
}
},
"cveMetadata": {
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"assignerShortName": "Go",
"cveId": "CVE-2025-61726",
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"dateReserved": "2025-09-30T15:05:03.605Z",
"dateUpdated": "2026-01-29T18:31:59.685Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
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CVE-2025-61730 (GCVE-0-2025-61730)
Vulnerability from cvelistv5 – Published: 2026-01-28 19:30 – Updated: 2026-02-02 17:28
VLAI
Title
Handshake messages may be processed at the incorrect encryption level in crypto/tls
Summary
During the TLS 1.3 handshake if multiple messages are sent in records that span encryption level boundaries (for instance the Client Hello and Encrypted Extensions messages), the subsequent messages may be processed before the encryption level changes. This can cause some minor information disclosure if a network-local attacker can inject messages during the handshake.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-940 - Improper Verification of Source of a Communication Channel
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | crypto/tls |
Affected:
0 , < 1.24.12
(semver)
Affected: 1.25.0 , < 1.25.6 (semver) |
Credits
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"version": "3.1"
}
},
{
"other": {
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"options": [
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},
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},
{
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}
],
"role": "CISA Coordinator",
"timestamp": "2026-02-02T17:28:46.305649Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-02-02T17:28:49.572Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://pkg.go.dev",
"defaultStatus": "unaffected",
"packageName": "crypto/tls",
"product": "crypto/tls",
"programRoutines": [
{
"name": "Conn.handleKeyUpdate"
},
{
"name": "Conn.handshakeContext"
},
{
"name": "clientHandshakeStateTLS13.establishHandshakeKeys"
},
{
"name": "clientHandshakeStateTLS13.readServerFinished"
},
{
"name": "clientHandshakeStateTLS13.sendClientFinished"
},
{
"name": "serverHandshakeStateTLS13.checkForResumption"
},
{
"name": "serverHandshakeStateTLS13.doHelloRetryRequest"
},
{
"name": "serverHandshakeStateTLS13.sendServerParameters"
},
{
"name": "serverHandshakeStateTLS13.sendServerFinished"
},
{
"name": "serverHandshakeStateTLS13.readClientFinished"
},
{
"name": "Conn.quicSetReadSecret"
},
{
"name": "Conn.Handshake"
},
{
"name": "Conn.HandshakeContext"
},
{
"name": "Conn.Read"
},
{
"name": "Conn.Write"
},
{
"name": "Dial"
},
{
"name": "DialWithDialer"
},
{
"name": "Dialer.Dial"
},
{
"name": "Dialer.DialContext"
},
{
"name": "QUICConn.HandleData"
},
{
"name": "QUICConn.Start"
}
],
"vendor": "Go standard library",
"versions": [
{
"lessThan": "1.24.12",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "1.25.6",
"status": "affected",
"version": "1.25.0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "Coia Prant (github.com/rbqvq)"
}
],
"descriptions": [
{
"lang": "en",
"value": "During the TLS 1.3 handshake if multiple messages are sent in records that span encryption level boundaries (for instance the Client Hello and Encrypted Extensions messages), the subsequent messages may be processed before the encryption level changes. This can cause some minor information disclosure if a network-local attacker can inject messages during the handshake."
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "CWE-940: Improper Verification of Source of a Communication Channel",
"lang": "en"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-01-28T19:30:30.986Z",
"orgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"shortName": "Go"
},
"references": [
{
"url": "https://go.dev/cl/724120"
},
{
"url": "https://go.dev/issue/76443"
},
{
"url": "https://groups.google.com/g/golang-announce/c/Vd2tYVM8eUc"
},
{
"url": "https://pkg.go.dev/vuln/GO-2026-4340"
}
],
"title": "Handshake messages may be processed at the incorrect encryption level in crypto/tls"
}
},
"cveMetadata": {
"assignerOrgId": "1bb62c36-49e3-4200-9d77-64a1400537cc",
"assignerShortName": "Go",
"cveId": "CVE-2025-61730",
"datePublished": "2026-01-28T19:30:30.986Z",
"dateReserved": "2025-09-30T15:05:03.605Z",
"dateUpdated": "2026-02-02T17:28:49.572Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2025-61727 (GCVE-0-2025-61727)
Vulnerability from cvelistv5 – Published: 2025-12-03 19:37 – Updated: 2025-12-03 22:06
VLAI
Title
Improper application of excluded DNS name constraints when verifying wildcard names in crypto/x509
Summary
An excluded subdomain constraint in a certificate chain does not restrict the usage of wildcard SANs in the leaf certificate. For example a constraint that excludes the subdomain test.example.com does not prevent a leaf certificate from claiming the SAN *.example.com.
Severity
6.5 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | crypto/x509 |
Affected:
0 , < 1.24.11
(semver)
Affected: 1.25.0 , < 1.25.5 (semver) |
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CVE-2025-61729 (GCVE-0-2025-61729)
Vulnerability from cvelistv5 – Published: 2025-12-02 18:54 – Updated: 2025-12-03 19:37
VLAI
Title
Excessive resource consumption when printing error string for host certificate validation in crypto/x509
Summary
Within HostnameError.Error(), when constructing an error string, there is no limit to the number of hosts that will be printed out. Furthermore, the error string is constructed by repeated string concatenation, leading to quadratic runtime. Therefore, a certificate provided by a malicious actor can result in excessive resource consumption.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-400 - Uncontrolled Resource Consumption
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Go standard library | crypto/x509 |
Affected:
0 , < 1.24.11
(semver)
Affected: 1.25.0 , < 1.25.5 (semver) |
Credits
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