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CWE-93
Improper Neutralization of CRLF Sequences ('CRLF Injection')
The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs.
CVE-2026-48861 (GCVE-0-2026-48861)
Vulnerability from cvelistv5 – Published: 2026-06-02 14:15 – Updated: 2026-06-02 19:14
VLAI
EPSS
VEX
Title
CRLF injection in HTTP/1 request line via unvalidated method in Mint
Summary
Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability in elixir-mint Mint allows HTTP Request Splitting and HTTP Request Smuggling.
In lib/mint/http1/request.ex, the encode_request_line/2 function splices the caller-supplied method and target arguments directly into the HTTP/1 request line without any character validation: [method, ?\s, target, " HTTP/1.1\r\n"]. An application that forwards attacker-controlled input as the HTTP method or target to Mint.HTTP.request/5 is therefore exposed to request-line CRLF injection: the attacker can terminate the request line early, inject arbitrary headers, and smuggle an entirely separate pipelined HTTP request onto the same TCP connection.
Mint 1.7.0 introduced validate_request_target/2, which rejects CRLF and other control characters in the target by default and closes the path/query vector unless the caller opts out via skip_target_validation: true. The method field remains unvalidated, so the method-based injection is exploitable under the default Mint configuration on all versions.
This issue affects mint: from 0.1.0 before 1.9.0.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/elixir-mint/mint/security/advi… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-48861.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-48861 | related |
| https://github.com/elixir-mint/mint/commit/fad091… | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| elixir-mint | mint |
Affected:
0.1.0 , < 1.9.0
(semver)
cpe:2.3:a:elixir-mint:mint:*:*:*:*:*:*:*:* |
|
| elixir-mint | mint |
Affected:
8db1acff30b6a9433762c18b1e1f891b8c1f74f7 , < fad091454cbb7449b19edb8e1fee12ca7cf28c3a
(git)
cpe:2.3:a:elixir-mint:mint:*:*:*:*:*:*:*:* |
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CVE-2026-49130 (GCVE-0-2026-49130)
Vulnerability from cvelistv5 – Published: 2026-05-28 19:12 – Updated: 2026-05-29 14:59 X_Open Source
VLAI
EPSS
VEX
Title
Music Player Daemon < 0.24.11 CRLF Injection via XspfPlaylistPlugin.cxx
Summary
Music Player Daemon (MPD) before version 0.24.11 contains a CRLF injection vulnerability in the xspf_char_data function within the XSPF playlist plugin that allows attackers to embed literal CR/LF bytes in URI fields by supplying a malicious XSPF playlist with XML numeric character references. Attackers can inject forged key-value lines through the location field into MPD protocol responses including playlistinfo, currentsong, and listplaylist outputs, as well as the state file writer, by exploiting Expat's decoding of numeric character references prior to the character data callback.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://mstreet97.github.io/security-research/ope… | technical-descriptionexploit |
| https://www.musicpd.org/news/2026/05/mpd-0-24-11-… | release-notespatch |
| https://raw.githubusercontent.com/MusicPlayerDaem… | release-notes |
| https://github.com/MusicPlayerDaemon/MPD/releases… | release-notes |
| https://github.com/MusicPlayerDaemon/MPD/issues/2483 | issue-tracking |
| https://github.com/MusicPlayerDaemon/MPD/commit/8… | patch |
| https://www.vulncheck.com/advisories/music-player… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| MusicPlayerDaemon | MPD |
Affected:
0 , < 0.24.11
(semver)
|
Date Public
2026-05-15 00:00
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CVE-2026-49214 (GCVE-0-2026-49214)
Vulnerability from cvelistv5 – Published: 2026-06-11 12:38 – Updated: 2026-06-11 12:47
VLAI
EPSS
VEX
Title
guzzlehttp/psr7 has CRLF Injection via URI Host Component
Summary
guzzlehttp/psr7 is a PSR-7 HTTP message library implementation in PHP. Versions prior to 2.10.2 did not reject ASCII control characters, whitespace, or DEL in first-party URI host components. A vulnerable flow is: First, an application accepts a user-controlled URL. Second, the URL is used to construct a PSR-7 `Uri` or `Request`. Third, the host component contains CRLF or another header-unsafe character. Fourth, the host is copied into the PSR-7 `Host` header when no explicit `Host` header is provided. Finally, the request is serialized or sent by an HTTP client that does not independently reject the malformed host. In that flow, an attacker can cause the serialized request to contain additional attacker-controlled header lines. For example, a host containing `"\r\nX-Injected: yes"` can cause the generated `Host` header to span multiple HTTP header lines. Applications are affected when they use user-controlled URLs for outbound HTTP requests, URL forwarding, proxying, crawling, webhook delivery, or similar request-dispatch flows. In deployments involving HTTP/1.1 connection reuse, proxies, gateways, or load balancers, this malformed request may also contribute to request smuggling or cache poisoning, depending on how downstream components parse the request. The issue is patched in `2.10.2` and later. `1.x` is end-of-life and will not receive a patch. As a workaround, validate and reject all untrusted URI strings before constructing PSR-7 `Uri` or `Request` instances. Reject input containing ASCII control characters, whitespace, or DEL, including CRLF, tab, space, NUL, or DEL characters. Applications that forward requests should also ensure the final HTTP client or serializer rejects invalid URI and header data before writing requests to the network.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/guzzle/psr7/security/advisorie… | x_refsource_CONFIRM |
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CVE-2026-49756 (GCVE-0-2026-49756)
Vulnerability from cvelistv5 – Published: 2026-06-08 15:20 – Updated: 2026-06-08 16:34
VLAI
EPSS
VEX
Title
Multipart form-data header injection in Req via unescaped name/filename/content_type
Summary
Improper Neutralization of CRLF Sequences ('CRLF Injection') vulnerability in wojtekmach Req allows multipart parameter smuggling via attacker-influenced part metadata.
Req.Utils.encode_form_part/2 in lib/req/utils.ex builds the per-part headers by interpolating the caller-supplied name, filename, and content_type values directly into the content-disposition and content-type lines with no escaping or CRLF stripping. A value containing ", \r, or \n closes the surrounding quoted value and starts a new header line; an additional \r\n--<boundary> terminates the current part and prepends a smuggled part of the attacker's choosing.
This is reachable through every supported way of supplying a part. It is particularly easy when value is a %File.Stream{}, because filename then defaults to Path.basename(stream.path) and POSIX filenames may legitimately contain \r and \n. Any application that forwards user-controlled filenames (or field names / MIME types) through Req.post/2 with form_multipart: lets an attacker inject arbitrary headers into the outgoing multipart body or smuggle additional fields and parts into the request the victim service sends downstream.
This issue affects req: from 0.5.3 before 0.6.0.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/wojtekmach/req/security/adviso… | vendor-advisoryrelated |
| https://cna.erlef.org/cves/CVE-2026-49756.html | related |
| https://osv.dev/vulnerability/EEF-CVE-2026-49756 | related |
| https://github.com/wojtekmach/req/commit/74506ff2… | patch |
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| wojtekmach | req |
Affected:
0.5.3 , < 0.6.0
(semver)
cpe:2.3:a:wojtekmach:req:*:*:*:*:*:*:*:* |
|
| wojtekmach | req |
Affected:
60253dbe9436cb8e9c738f895032f2e87939b597 , < 74506ff2c5addf74df85d79dc726e9b2e264a8ba
(git)
cpe:2.3:a:wojtekmach:req:*:*:*:*:*:*:*:* |
Credits
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CVE-2026-50188 (GCVE-0-2026-50188)
Vulnerability from cvelistv5 – Published: 2026-07-09 18:44 – Updated: 2026-07-09 19:20
VLAI
EPSS
VEX
Title
Kirby: Request header injection in `Http\Remote`
Summary
Kirby is an open-source content management system. Prior to 4.9.4 and 5.4.4, Kirby sites and plugins using the Kirby Http Remote class, including Remote::request(), Remote::get(), and Remote::post(), to send outgoing HTTP requests with untrusted data in the headers option could allow newline characters in a header value to inject a separate unintended request header to the remote service. This issue is fixed in versions 4.9.4 and 5.4.4.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://github.com/getkirby/kirby/security/adviso… | x_refsource_CONFIRM |
| https://github.com/getkirby/kirby/commit/aa33414e… | x_refsource_MISC |
| https://github.com/getkirby/kirby/commit/fad9cbd2… | x_refsource_MISC |
| https://github.com/getkirby/kirby/releases/tag/4.9.4 | x_refsource_MISC |
| https://github.com/getkirby/kirby/releases/tag/5.4.4 | x_refsource_MISC |
Impacted products
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CVE-2026-50269 (GCVE-0-2026-50269)
Vulnerability from cvelistv5 – Published: 2026-06-22 16:30 – Updated: 2026-06-22 17:22
VLAI
EPSS
VEX
Title
AIOHTTP: CRLF injection in multipart headers
Summary
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.0, attacker-controlled input included into multipart/payload headers can be used to modify a request to inject additional headers or similar. In the unlikely situation that an application is passing user-controlled strings into MultipartWriter.append(headers=...) or Payload.headers, then an attacker may be able to modify the request to inject headers or change the contents of the request. This vulnerability is fixed in 3.14.0.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/commit/bf8807… | x_refsource_MISC |
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CVE-2026-50292 (GCVE-0-2026-50292)
Vulnerability from cvelistv5 – Published: 2026-06-04 16:41 – Updated: 2026-06-04 18:12
VLAI
EPSS
VEX
Summary
In libinput before 1.30.4 and 1.31.x before 1.31.3, libinput-device-group unescaped phys output can inject udev properties leading to arbitrary root code execution
Severity
7.4 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| freedesktop | libinput |
Affected:
0 , < 1.30.4
(semver)
Affected: 1.31.0 , < 1.31.3 (semver) |
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CVE-2026-50629 (GCVE-0-2026-50629)
Vulnerability from cvelistv5 – Published: 2026-06-12 08:57 – Updated: 2026-06-12 14:47
VLAI
EPSS
VEX
Title
Apache CXF: OAuth2: Log Injection via Unsanitized Client Identifier
Summary
The 'clientId' parameter from incoming HTTP requests is directly concatenated into OAuth2 server log warning messages without sanitizing control characters. This allows an attacker to inject arbitrary content, including fake log entries, into the server's log files. Users are recommended to upgrade to versions 4.2.2 or 4.1.7, which fixes this issue.
Severity
5.3 (Medium)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')
Assigner
References
2 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache CXF |
Affected:
4.2.0 , < 4.2.2
(semver)
Affected: 0 , < 4.1.7 (semver) |
Credits
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CVE-2026-50637 (GCVE-0-2026-50637)
Vulnerability from cvelistv5 – Published: 2026-06-10 18:32 – Updated: 2026-06-19 15:32
VLAI
EPSS
VEX
Title
Metrics::Any::Adapter::Statsd versions before 0.04 for Perl does not protect against metric injections
Summary
Metrics::Any::Adapter::Statsd versions before 0.04 for Perl does not protect against metric injections.
The statsd protocol (and extensions) allow mutiple metrics, separated by newlines, to be sent per packet.
The send method does not validate the contents of the metric names or values. If the names have newlines and statsd control characters (colon, pipe) then metric injections are possible.
Version 0.04 fixed this by modifying the _make method to block metric names with characters below ASCII 32 (which includes the newline), or colons or pipes.
Severity
8.2 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| PEVANS | Metrics::Any::Adapter::Statsd |
Affected:
0 , < 0.04
(custom)
|
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CVE-2026-50638 (GCVE-0-2026-50638)
Vulnerability from cvelistv5 – Published: 2026-06-10 18:32 – Updated: 2026-06-19 15:32
VLAI
EPSS
VEX
Title
Metrics::Any::Adapter::DogStatsd versions before 0.04 for Perl does not protect against metric injections
Summary
Metrics::Any::Adapter::DogStatsd versions before 0.04 for Perl does not protect against metric injections.
The statsd protocol (and extensions such as dogstatsd) allow mutiple metrics, separated by newlines, to be sent per packet.
Metrics::Any::Adapter::DogStatsd which extends Metrics::Any::Adapter::Statsd, which has a similar vulnerability.
In addition, the _tags function does not check tags for newlines or statsd control characters. The tags can be used for metric injections.
Severity
9.1 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://metacpan.org/release/PEVANS/Metrics-Any-A… | release-notes |
| https://www.cve.org/CVERecord?id=CVE-2026-9270 | related |
| https://www.cve.org/CVERecord?id=CVE-2026-50637 | related |
| https://www.cve.org/CVERecord?id=CVE-2026-50639 | related |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| PEVANS | Metrics::Any::Adapter::DogStatsd |
Affected:
0 , < 0.04
(custom)
|
{
"containers": {
"adp": [
{
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 9.1,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
}
},
{
"other": {
"content": {
"id": "CVE-2026-50638",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "total"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-06-11T19:10:59.333211Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-06-11T19:11:42.654Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"collectionURL": "https://cpan.org/modules",
"defaultStatus": "unaffected",
"packageName": "Metrics-Any-Adapter-Statsd",
"product": "Metrics::Any::Adapter::DogStatsd",
"programRoutines": [
{
"name": "Metrics::Any::Adapter::DogStatsd::_tags"
}
],
"vendor": "PEVANS",
"versions": [
{
"lessThan": "0.04",
"status": "affected",
"version": "0",
"versionType": "custom"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Metrics::Any::Adapter::DogStatsd versions before 0.04 for Perl does not protect against metric injections.\n\nThe statsd protocol (and extensions such as dogstatsd) allow mutiple metrics, separated by newlines, to be sent per packet.\n\nMetrics::Any::Adapter::DogStatsd which extends Metrics::Any::Adapter::Statsd, which has a similar vulnerability.\n\nIn addition, the _tags function does not check tags for newlines or statsd control characters. The tags can be used for metric injections."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-93",
"description": "CWE-93 Improper Neutralization of CRLF Sequences",
"lang": "en",
"type": "CWE"
}
]
},
{
"descriptions": [
{
"cweId": "CWE-150",
"description": "CWE-150 Improper Neutralization of Escape, Meta, or Control Sequences",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-19T15:32:58.508Z",
"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"shortName": "CPANSec"
},
"references": [
{
"tags": [
"release-notes"
],
"url": "https://metacpan.org/release/PEVANS/Metrics-Any-Adapter-Statsd-0.04/changes"
},
{
"tags": [
"related"
],
"url": "https://www.cve.org/CVERecord?id=CVE-2026-9270"
},
{
"tags": [
"related"
],
"url": "https://www.cve.org/CVERecord?id=CVE-2026-50637"
},
{
"tags": [
"related"
],
"url": "https://www.cve.org/CVERecord?id=CVE-2026-50639"
}
],
"solutions": [
{
"lang": "en",
"value": "Upgrade to v0.04 or later."
}
],
"source": {
"discovery": "UNKNOWN"
},
"title": "Metrics::Any::Adapter::DogStatsd versions before 0.04 for Perl does not protect against metric injections",
"x_generator": {
"engine": "cpansec-cna-tool 0.1"
}
}
},
"cveMetadata": {
"assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"assignerShortName": "CPANSec",
"cveId": "CVE-2026-50638",
"datePublished": "2026-06-10T18:32:21.666Z",
"dateReserved": "2026-06-05T12:07:20.886Z",
"dateUpdated": "2026-06-19T15:32:58.508Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Mitigation
Phase: Implementation
Description:
- Avoid using CRLF as a special sequence.
Mitigation
Phase: Implementation
Description:
- Appropriately filter or quote CRLF sequences in user-controlled input.
CAPEC-15: Command Delimiters
An attack of this type exploits a programs' vulnerabilities that allows an attacker's commands to be concatenated onto a legitimate command with the intent of targeting other resources such as the file system or database. The system that uses a filter or denylist input validation, as opposed to allowlist validation is vulnerable to an attacker who predicts delimiters (or combinations of delimiters) not present in the filter or denylist. As with other injection attacks, the attacker uses the command delimiter payload as an entry point to tunnel through the application and activate additional attacks through SQL queries, shell commands, network scanning, and so on.
CAPEC-81: Web Server Logs Tampering
Web Logs Tampering attacks involve an attacker injecting, deleting or otherwise tampering with the contents of web logs typically for the purposes of masking other malicious behavior. Additionally, writing malicious data to log files may target jobs, filters, reports, and other agents that process the logs in an asynchronous attack pattern. This pattern of attack is similar to "Log Injection-Tampering-Forging" except that in this case, the attack is targeting the logs of the web server and not the application.