GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

CVE-2026-49977 (GCVE-0-2026-49977)

Vulnerability from cvelistv5 – Published: 2026-07-17 20:21 – Updated: 2026-07-20 19:11
VLAI
Title
tarteaucitron.js: data-cookie attribute can be used to delete arbitrary cookies
Summary
tarteaucitron.js is a compliant and accessible cookie banner. Prior to 1.33.0, tarteaucitron.cookie.purge() is called on any element with the purgeBtn class and does not check whether the element is a legitimate tarteaucitron button or whether the cookie corresponds to a service handled by tarteaucitron. If an attacker can write HTML with data attributes, an element with data-cookie can silently delete a non-HttpOnly cookie with a known name when clicked by a user. This issue is fixed in version 1.33.0.
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-20 18:51 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
AmauriC tarteaucitron.js Affected: < 1.33.0
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2026-07-17T20:23:26.752Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "https://www.drupal.org/sa-contrib-2026-040"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-49977",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-20T18:51:55.083424Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-20T19:11:28.659Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "tarteaucitron.js",
          "vendor": "AmauriC",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.33.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "tarteaucitron.js is a compliant and accessible cookie banner. Prior to 1.33.0, tarteaucitron.cookie.purge() is called on any element with the purgeBtn class and does not check whether the element is a legitimate tarteaucitron button or whether the cookie corresponds to a service handled by tarteaucitron. If an attacker can write HTML with data attributes, an element with data-cookie can silently delete a non-HttpOnly cookie with a known name when clicked by a user. This issue is fixed in version 1.33.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-285",
              "description": "CWE-285: Improper Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-17T20:21:21.476Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/AmauriC/tarteaucitron.js/security/advisories/GHSA-jxj7-g6gm-49j7",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/AmauriC/tarteaucitron.js/security/advisories/GHSA-jxj7-g6gm-49j7"
        },
        {
          "name": "https://github.com/AmauriC/tarteaucitron.js/commit/24b5464400ae2ff1ad96a092c629b9d632b9cc93",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/AmauriC/tarteaucitron.js/commit/24b5464400ae2ff1ad96a092c629b9d632b9cc93"
        },
        {
          "name": "https://github.com/AmauriC/tarteaucitron.js/releases/tag/v1.33.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/AmauriC/tarteaucitron.js/releases/tag/v1.33.0"
        }
      ],
      "source": {
        "advisory": "GHSA-jxj7-g6gm-49j7",
        "discovery": "UNKNOWN"
      },
      "title": "tarteaucitron.js: data-cookie attribute can be used to delete arbitrary cookies"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-49977",
    "datePublished": "2026-07-17T20:21:21.476Z",
    "dateReserved": "2026-06-02T18:30:51.281Z",
    "dateUpdated": "2026-07-20T19:11:28.659Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-49977",
      "date": "2026-09-19",
      "epss": "0.00354",
      "percentile": "0.29159"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "tarteaucitron.js",
                "vendor": "AmauriC",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003c 1.33.0"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "tarteaucitron.js is a compliant and accessible cookie banner. Prior to 1.33.0, tarteaucitron.cookie.purge() is called on any element with the purgeBtn class and does not check whether the element is a legitimate tarteaucitron button or whether the cookie corresponds to a service handled by tarteaucitron. If an attacker can write HTML with data attributes, an element with data-cookie can silently delete a non-HttpOnly cookie with a known name when clicked by a user. This issue is fixed in version 1.33.0."
          }
        ],
        "id": "CVE-2026-49977",
        "lastModified": "2026-07-23T18:08:15.870",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 4.3,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
                "version": "3.1"
              },
              "exploitabilityScore": 2.8,
              "impactScore": 1.4,
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ],
          "ssvcV203": [
            {
              "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "ssvcData": {
                "id": "CVE-2026-49977",
                "options": [
                  {
                    "exploitation": "none"
                  },
                  {
                    "automatable": "no"
                  },
                  {
                    "technicalImpact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-20T18:51:55.083424Z",
                "version": "2.0.3"
              }
            }
          ]
        },
        "published": "2026-07-17T21:17:06.930",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/AmauriC/tarteaucitron.js/commit/24b5464400ae2ff1ad96a092c629b9d632b9cc93"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/AmauriC/tarteaucitron.js/releases/tag/v1.33.0"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/AmauriC/tarteaucitron.js/security/advisories/GHSA-jxj7-g6gm-49j7"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://www.drupal.org/sa-contrib-2026-040"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Deferred",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-285"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Secondary"
          }
        ]
      }
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "providerMetadata": {
              "dateUpdated": "2026-07-17T20:23:26.752Z",
              "orgId": "af854a3a-2127-422b-91ae-364da2661108",
              "shortName": "CVE"
            },
            "references": [
              {
                "url": "https://www.drupal.org/sa-contrib-2026-040"
              }
            ],
            "title": "CVE Program Container"
          },
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-49977",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-07-20T18:51:55.083424Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-07-20T18:51:55.763Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "tarteaucitron.js",
              "vendor": "AmauriC",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003c 1.33.0"
                }
              ]
            }
          ],
          "descriptions": [
            {
              "lang": "en",
              "value": "tarteaucitron.js is a compliant and accessible cookie banner. Prior to 1.33.0, tarteaucitron.cookie.purge() is called on any element with the purgeBtn class and does not check whether the element is a legitimate tarteaucitron button or whether the cookie corresponds to a service handled by tarteaucitron. If an attacker can write HTML with data attributes, an element with data-cookie can silently delete a non-HttpOnly cookie with a known name when clicked by a user. This issue is fixed in version 1.33.0."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 4.3,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
                "version": "3.1"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-285",
                  "description": "CWE-285: Improper Authorization",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-07-17T20:21:21.476Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "name": "https://github.com/AmauriC/tarteaucitron.js/security/advisories/GHSA-jxj7-g6gm-49j7",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/AmauriC/tarteaucitron.js/security/advisories/GHSA-jxj7-g6gm-49j7"
            },
            {
              "name": "https://github.com/AmauriC/tarteaucitron.js/commit/24b5464400ae2ff1ad96a092c629b9d632b9cc93",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/AmauriC/tarteaucitron.js/commit/24b5464400ae2ff1ad96a092c629b9d632b9cc93"
            },
            {
              "name": "https://github.com/AmauriC/tarteaucitron.js/releases/tag/v1.33.0",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/AmauriC/tarteaucitron.js/releases/tag/v1.33.0"
            }
          ],
          "source": {
            "advisory": "GHSA-jxj7-g6gm-49j7",
            "discovery": "UNKNOWN"
          },
          "title": "tarteaucitron.js: data-cookie attribute can be used to delete arbitrary cookies"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2026-49977",
        "datePublished": "2026-07-17T20:21:21.476Z",
        "dateReserved": "2026-06-02T18:30:51.281Z",
        "dateUpdated": "2026-07-20T19:11:28.659Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.


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.