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

Vulnerability from cvelistv5 – Published: 2026-08-24 20:33 – Updated: 2026-08-25 19:23
VLAI
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 CNA under the mitre root
CNA scorecard C 72/100 over 7730 records in the last 180 days details
References
Impacted products
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 Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "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",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-77634",
      "date": "2026-10-17",
      "epss": "0.00543",
      "percentile": "0.44403"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "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"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "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."
          },
          {
            "lang": "es",
            "value": "CakePHP es un framework de desarrollo r\u00e1pido para PHP. Antes de las versiones 4.5.12, 4.6.5, 5.1.8, 5.2.14 y 5.3.7 en sus respectivas l\u00edneas de lanzamiento, a los encabezados de correo personalizados a\u00f1adidos con Message::setHeaders() o Message::addHeaders() no se les eliminan los bytes CRLF, permitiendo la inyecci\u00f3n de encabezados cuyo se utilizan datos controlados por el usuario en los encabezados del mensaje. Este problema est\u00e1 solucionado en las versiones 4.5.12, 4.6.5, 5.1.8, 5.2.14 y 5.3.7."
          }
        ],
        "id": "CVE-2026-77634",
        "lastModified": "2026-10-12T21:10:00.227",
        "metrics": {
          "cvssMetricV40": [
            {
              "cvssData": {
                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "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",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "privilegesRequired": "NONE",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "NONE",
                "subIntegrityImpact": "NONE",
                "userInteraction": "NONE",
                "valueDensity": "NOT_DEFINED",
                "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
                "version": "4.0",
                "vulnAvailabilityImpact": "NONE",
                "vulnConfidentialityImpact": "NONE",
                "vulnIntegrityImpact": "HIGH",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
              },
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-77634",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-25T18:32:29.994179Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-08-24T21:17:48.307",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/cakephp/cakephp/commit/08188962bcd99a95da1e49f62e786f2d688f1e41"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/cakephp/cakephp/commit/2afe42b02d8ddc5d442bca5e8bb61910a727646e"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/cakephp/cakephp/commit/3e09dae6cbdc983754fa3a8e6aae74da102a3ea1"
          },
          {
            "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"
          }
        ]
      }
    },
    "vulnrichment": {
      "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": "2026-08-25T18:32:33.699Z",
              "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"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.

Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.
Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

JSON

Loading timeline…




    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.