Vulnerability-Lookup

GHSA-2QH5-382H-3JPC

Vulnerability from github – Published: 2026-09-08 20:56 – Updated: 2026-09-08 20:56

Summary

CakePHP: SmtpTransport vulnerable to CRLF header injection

Details

Impact

Custom mail headers added with Message::setHeaders() or addHeaders() do not have CRLF replaced allowing header injection if user controlled data is added to message headers without stripping CRLF bytes.

Patches

5.3.7, 5.2.14, 5.1.9, 4.6.5, 4.5.12 contain fixes for this issue.

Workarounds

You can strip CRLF bytes from email header values before setting header values.

Severity

8.2 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "cakephp/cakephp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.5.0"
            },
            {
              "fixed": "4.5.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "cakephp/cakephp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.6.0"
            },
            {
              "fixed": "4.6.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c 5.1.8"
      },
      "package": {
        "ecosystem": "Packagist",
        "name": "cakephp/cakephp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.0.0"
            },
            {
              "fixed": "5.1.9"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "cakephp/cakephp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.2.0"
            },
            {
              "fixed": "5.2.14"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "cakephp/cakephp"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.3.0"
            },
            {
              "fixed": "5.3.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-77634"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-93"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-08T20:56:26Z",
    "nvd_published_at": "2026-08-24T21:17:48Z",
    "severity": "HIGH"
  },
  "details": "### Impact\n\nCustom mail headers added with `Message::setHeaders()` or `addHeaders()` do not have CRLF replaced allowing header injection if user controlled data is added to message headers without stripping CRLF bytes.\n\n### Patches\n5.3.7, 5.2.14, 5.1.9, 4.6.5, 4.5.12 contain fixes for this issue.\n\n### Workarounds\nYou can strip CRLF bytes from email header values before setting header values.",
  "id": "GHSA-2qh5-382h-3jpc",
  "modified": "2026-09-08T20:56:26Z",
  "published": "2026-09-08T20:56:26Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/cakephp/cakephp/security/advisories/GHSA-2qh5-382h-3jpc"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-77634"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cakephp/cakephp/commit/08188962bcd99a95da1e49f62e786f2d688f1e41"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cakephp/cakephp/commit/2afe42b02d8ddc5d442bca5e8bb61910a727646e"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cakephp/cakephp/commit/3e09dae6cbdc983754fa3a8e6aae74da102a3ea1"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cakephp/cakephp/commit/b67b622457362b075bb37e625a82af73a0b3c9c3"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/cakephp/cakephp"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "CakePHP: SmtpTransport vulnerable to CRLF header injection"
}

CVE-2026-77634 (GCVE-0-2026-77634)

Vulnerability from cvelistv5 – Published: 2026-08-24 20:33 – Updated: 2026-08-25 19:23

Title

CakePHP: SmtpTransport vulnerable to CRLF header injection

Summary

CakePHP is a rapid development framework for PHP. Prior to versions 4.5.12, 4.6.5, 5.1.8, 5.2.14, and 5.3.7 on their respective release lines, custom mail headers added with Message::setHeaders() or Message::addHeaders() do not have CRLF bytes removed, allowing header injection when user-controlled data is used in message headers. This issue is fixed in versions 4.5.12, 4.6.5, 5.1.8, 5.2.14, and 5.3.7.

Severity

8.2 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-25 18:32 UTC

CWE

CWE-93 - Improper Neutralization of CRLF Sequences ('CRLF Injection')

Assigner

GitHub_M mitre root

References

5 references

URL	Tags
https://github.com/cakephp/cakephp/security/advis…	x_refsource_CONFIRM
https://github.com/cakephp/cakephp/commit/0818896…	x_refsource_MISC
https://github.com/cakephp/cakephp/commit/2afe42b…	x_refsource_MISC
https://github.com/cakephp/cakephp/commit/3e09dae…	x_refsource_MISC
https://github.com/cakephp/cakephp/commit/b67b622…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
cakephp	cakephp	Affected: >= 4.5.0, < 4.5.12 Affected: >= 4.6.0, < 4.6.5 Affected: >= 5.0.0, < 5.1.9 Affected: >= 5.2.0, < 5.2.14 Affected: >= 5.3.0, < 5.3.7

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-77634",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-25T18:32:29.994179Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-25T19:23:40.053Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "cakephp",
          "vendor": "cakephp",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 4.5.0, \u003c 4.5.12"
            },
            {
              "status": "affected",
              "version": "\u003e= 4.6.0, \u003c 4.6.5"
            },
            {
              "status": "affected",
              "version": "\u003e= 5.0.0, \u003c 5.1.9"
            },
            {
              "status": "affected",
              "version": "\u003e= 5.2.0, \u003c 5.2.14"
            },
            {
              "status": "affected",
              "version": "\u003e= 5.3.0, \u003c 5.3.7"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "CakePHP is a rapid development framework for PHP. Prior to versions 4.5.12, 4.6.5, 5.1.8, 5.2.14, and 5.3.7 on their respective release lines, custom mail headers added with Message::setHeaders() or Message::addHeaders() do not have CRLF bytes removed, allowing header injection when user-controlled data is used in message headers. This issue is fixed in versions 4.5.12, 4.6.5, 5.1.8, 5.2.14, and 5.3.7."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-93",
              "description": "CWE-93: Improper Neutralization of CRLF Sequences (\u0027CRLF Injection\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-24T20:33:46.836Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/cakephp/cakephp/security/advisories/GHSA-2qh5-382h-3jpc",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/cakephp/cakephp/security/advisories/GHSA-2qh5-382h-3jpc"
        },
        {
          "name": "https://github.com/cakephp/cakephp/commit/08188962bcd99a95da1e49f62e786f2d688f1e41",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/cakephp/cakephp/commit/08188962bcd99a95da1e49f62e786f2d688f1e41"
        },
        {
          "name": "https://github.com/cakephp/cakephp/commit/2afe42b02d8ddc5d442bca5e8bb61910a727646e",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/cakephp/cakephp/commit/2afe42b02d8ddc5d442bca5e8bb61910a727646e"
        },
        {
          "name": "https://github.com/cakephp/cakephp/commit/3e09dae6cbdc983754fa3a8e6aae74da102a3ea1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/cakephp/cakephp/commit/3e09dae6cbdc983754fa3a8e6aae74da102a3ea1"
        },
        {
          "name": "https://github.com/cakephp/cakephp/commit/b67b622457362b075bb37e625a82af73a0b3c9c3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/cakephp/cakephp/commit/b67b622457362b075bb37e625a82af73a0b3c9c3"
        }
      ],
      "source": {
        "advisory": "GHSA-2qh5-382h-3jpc",
        "discovery": "UNKNOWN"
      },
      "title": "CakePHP: SmtpTransport vulnerable to CRLF header injection"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-77634",
    "datePublished": "2026-08-24T20:33:46.836Z",
    "dateReserved": "2026-08-20T20:52:01.927Z",
    "dateUpdated": "2026-08-25T19:23:40.053Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.