Vulnerability-Lookup

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	CPE status
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	guessed

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-77634

Vulnerability from fkie_nvd - Published: 2026-08-24 21:17 - Updated: 2026-09-09 21:06

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

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/cakephp/cakephp/commit/08188962bcd99a95da1e49f62e786f2d688f1e41
	security-advisories@github.com	https://github.com/cakephp/cakephp/commit/2afe42b02d8ddc5d442bca5e8bb61910a727646e
	security-advisories@github.com	https://github.com/cakephp/cakephp/commit/3e09dae6cbdc983754fa3a8e6aae74da102a3ea1
	security-advisories@github.com	https://github.com/cakephp/cakephp/commit/b67b622457362b075bb37e625a82af73a0b3c9c3
	security-advisories@github.com	https://github.com/cakephp/cakephp/security/advisories/GHSA-2qh5-382h-3jpc

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
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        {
          "product": "cakephp",
          "vendor": "cakephp",
          "versions": [
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            },
            {
              "status": "affected",
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            },
            {
              "status": "affected",
              "version": "\u003e= 5.2.0, \u003c 5.2.14"
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          "attackRequirements": "PRESENT",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.2,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
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          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
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    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/cakephp/cakephp/commit/b67b622457362b075bb37e625a82af73a0b3c9c3"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/cakephp/cakephp/security/advisories/GHSA-2qh5-382h-3jpc"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-93"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

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

Show details on source website

JSON

To clipboard

{
  "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"
}

ubuntu-cve-2026-77634

Vulnerability from osv_ubuntu

Published

2026-08-24 21:17

Modified

2026-09-02 16:27

Summary

Details

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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-77634	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-77634	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "cakephp",
            "binary_version": "2.8.0-1"
          },
          {
            "binary_name": "cakephp-scripts",
            "binary_version": "2.8.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "cakephp",
        "purl": "pkg:deb/ubuntu/cakephp@2.8.0-1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.7.2-1",
        "2.8.0-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "cakephp",
            "binary_version": "2.10.11-2"
          },
          {
            "binary_name": "cakephp-scripts",
            "binary_version": "2.10.11-2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "cakephp",
        "purl": "pkg:deb/ubuntu/cakephp@2.10.11-2?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.10.11-2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "cakephp",
            "binary_version": "2.10.24-1"
          },
          {
            "binary_name": "cakephp-scripts",
            "binary_version": "2.10.24-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "cakephp",
        "purl": "pkg:deb/ubuntu/cakephp@2.10.24-1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.10.11-2.1",
        "2.10.24-1"
      ]
    }
  ],
  "aliases": [],
  "details": "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.",
  "id": "UBUNTU-CVE-2026-77634",
  "modified": "2026-09-02T16:27:47Z",
  "published": "2026-08-24T21:17:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-77634"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-77634"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "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"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-77634"
  ]
}

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

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

FKIE_CVE-2026-77634

GHSA-2QH5-382H-3JPC

Impact

Patches

Workarounds

ubuntu-cve-2026-77634

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature

Related by attack behaviour