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8 vulnerabilities found for crypto/x509 by Go standard library

CVE-2025-61727 (GCVE-0-2025-61727)
Vulnerability from nvd
Published
2025-12-03 19:37
Modified
2025-12-03 22:06
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE
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.
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Version: 0   ≤
Version: 1.25.0   ≤
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Show details on NVD website

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              "baseScore": 6.5,
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              "confidentialityImpact": "LOW",
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                "timestamp": "2025-12-03T22:06:13.958433Z",
                "version": "2.0.3"
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          "dateUpdated": "2025-12-03T22:06:17.007Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
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        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "crypto/x509",
          "product": "crypto/x509",
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            {
              "name": "Certificate.Verify"
            }
          ],
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
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      ],
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              "description": "CWE-295: Improper Certificate Validation",
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          "url": "https://go.dev/cl/723900"
        },
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        },
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          "url": "https://groups.google.com/g/golang-announce/c/8FJoBkPddm4"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2025-4175"
        }
      ],
      "title": "Improper application of excluded DNS name constraints when verifying wildcard names in crypto/x509"
    }
  },
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CVE-2025-61729 (GCVE-0-2025-61729)
Vulnerability from nvd
Published
2025-12-02 18:54
Modified
2025-12-03 19:37
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
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.
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Version: 0   ≤
Version: 1.25.0   ≤
Create a notification for this product.
Show details on NVD website

To clipboard 

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            {
              "name": "Certificate.VerifyHostname"
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        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2025-4155"
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      ],
      "title": "Excessive resource consumption when printing error string for host certificate validation in crypto/x509"
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CVE-2025-58188 (GCVE-0-2025-58188)
Vulnerability from nvd
Published
2025-10-29 22:10
Modified
2025-11-04 21:13
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
Summary
Validating certificate chains which contain DSA public keys can cause programs to panic, due to a interface cast that assumes they implement the Equal method. This affects programs which validate arbitrary certificate chains.
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Version: 0   ≤
Version: 1.25.0   ≤
Create a notification for this product.
Show details on NVD website

To clipboard 

{
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            "cvssV3_1": {
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            {
              "name": "alreadyInChain"
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CVE-2025-58187 (GCVE-0-2025-58187)
Vulnerability from nvd
Published
2025-10-29 22:10
Modified
2025-11-20 22:23
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
Summary
Due to the design of the name constraint checking algorithm, the processing time of some inputs scale non-linearly with respect to the size of the certificate. This affects programs which validate arbitrary certificate chains.
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Version: 0   ≤
Version: 1.25.0   ≤
Create a notification for this product.
Show details on NVD website

To clipboard 

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            {
              "name": "parseSANExtension"
            },
            {
              "name": "domainToReverseLabels"
            },
            {
              "name": "CertPool.AppendCertsFromPEM"
            },
            {
              "name": "Certificate.CheckCRLSignature"
            },
            {
              "name": "Certificate.CheckSignature"
            },
            {
              "name": "Certificate.CheckSignatureFrom"
            },
            {
              "name": "Certificate.CreateCRL"
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              "name": "Certificate.Verify"
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            {
              "name": "CertificateRequest.CheckSignature"
            },
            {
              "name": "CreateCertificate"
            },
            {
              "name": "CreateCertificateRequest"
            },
            {
              "name": "CreateRevocationList"
            },
            {
              "name": "DecryptPEMBlock"
            },
            {
              "name": "EncryptPEMBlock"
            },
            {
              "name": "MarshalECPrivateKey"
            },
            {
              "name": "MarshalPKCS1PrivateKey"
            },
            {
              "name": "MarshalPKCS1PublicKey"
            },
            {
              "name": "MarshalPKCS8PrivateKey"
            },
            {
              "name": "MarshalPKIXPublicKey"
            },
            {
              "name": "ParseCRL"
            },
            {
              "name": "ParseCertificate"
            },
            {
              "name": "ParseCertificateRequest"
            },
            {
              "name": "ParseCertificates"
            },
            {
              "name": "ParseDERCRL"
            },
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              "name": "ParseECPrivateKey"
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              "name": "ParsePKCS1PrivateKey"
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            {
              "name": "ParsePKCS1PublicKey"
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              "name": "ParsePKCS8PrivateKey"
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            {
              "name": "ParseRevocationList"
            },
            {
              "name": "RevocationList.CheckSignatureFrom"
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        {
          "url": "https://pkg.go.dev/vuln/GO-2025-4007"
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      "title": "Quadratic complexity when checking name constraints in crypto/x509"
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CVE-2025-61727 (GCVE-0-2025-61727)
Vulnerability from cvelistv5
Published
2025-12-03 19:37
Modified
2025-12-03 22:06
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
CWE
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.
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Version: 0   ≤
Version: 1.25.0   ≤
Create a notification for this product.
Show details on NVD website

To clipboard 

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          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
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      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
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          "url": "https://go.dev/cl/723900"
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        },
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          "url": "https://groups.google.com/g/golang-announce/c/8FJoBkPddm4"
        },
        {
          "url": "https://pkg.go.dev/vuln/GO-2025-4175"
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      ],
      "title": "Improper application of excluded DNS name constraints when verifying wildcard names in crypto/x509"
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  },
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CVE-2025-61729 (GCVE-0-2025-61729)
Vulnerability from cvelistv5
Published
2025-12-02 18:54
Modified
2025-12-03 19:37
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
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.
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Version: 0   ≤
Version: 1.25.0   ≤
Create a notification for this product.
Show details on NVD website

To clipboard 

{
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CVE-2025-58188 (GCVE-0-2025-58188)
Vulnerability from cvelistv5
Published
2025-10-29 22:10
Modified
2025-11-04 21:13
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
Summary
Validating certificate chains which contain DSA public keys can cause programs to panic, due to a interface cast that assumes they implement the Equal method. This affects programs which validate arbitrary certificate chains.
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Version: 0   ≤
Version: 1.25.0   ≤
Create a notification for this product.
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
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CVE-2025-58187 (GCVE-0-2025-58187)
Vulnerability from cvelistv5
Published
2025-10-29 22:10
Modified
2025-11-20 22:23
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
Summary
Due to the design of the name constraint checking algorithm, the processing time of some inputs scale non-linearly with respect to the size of the certificate. This affects programs which validate arbitrary certificate chains.
References
Impacted products
Vendor Product Version
Go standard library crypto/x509 Version: 0   ≤
Version: 1.25.0   ≤
Create a notification for this product.
Show details on NVD website

To clipboard 

{
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