Vulnerability-Lookup

GHSA-Q5F6-QXM2-MCQM

Vulnerability from github – Published: 2026-01-13 20:35 – Updated: 2026-01-13 21:41

Summary

tarteaucitron.js has Regular Expression Denial of Service (ReDoS) vulnerability

Details

Summary

A potential Regular Expression Denial of Service (ReDoS) vulnerability was identified in tarteaucitron.js in the handling of the issuu_id parameter.

Details

The issue was caused by the use of insufficiently constrained regular expressions applied to attacker-controlled input:

if (issuu_id.match(/\d+\/\d+/)) {
    issuu_embed = '#' + issuu_id;
} else if (issuu_id.match(/d=(.*)&u=(.*)/)) {
    issuu_embed = '?' + issuu_id;
}

These expressions are not anchored and rely on greedy patterns (.*). When evaluated against specially crafted input, they may cause excessive backtracking, leading to high CPU consumption and potential denial of service.

Impact

An attacker able to control the issuu_id parameter could exploit this vulnerability to degrade performance or cause temporary service unavailability through CPU exhaustion.

No confidentiality or integrity impact was identified.

Fix https://github.com/AmauriC/tarteaucitron.js/commit/f0bbdac2fdf3cd24a325fc0928c0d34abf1b7b52

The logic was simplified and hardened by removing ambiguous regular expressions and enforcing strict input validation:

if (issuu_id.match(/^\d+\/\d+$/)) {
    issuu_embed = '#' + issuu_id;
} else {
    issuu_embed = '?' + issuu_id;
}

This change eliminates the risk of catastrophic backtracking and prevents ReDoS conditions.

Additionally, code related to the legacy "Alexa Rank" service was removed. This service, historically provided by Alexa.com via browser toolbars and popularity rankings, has been deprecated for several years and is no longer operational. The Alexa domain is now exclusively associated with the Amazon voice assistant, and the original ranking service has been permanently discontinued.

Severity ?

4.4 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "tarteaucitronjs"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.29.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-22809"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-01-13T20:35:28Z",
    "nvd_published_at": "2026-01-13T20:16:11Z",
    "severity": "MODERATE"
  },
  "details": "## Summary\n\nA potential Regular Expression Denial of Service (ReDoS) vulnerability was identified in tarteaucitron.js in the handling of the `issuu_id` parameter. \n\n## Details\n\nThe issue was caused by the use of insufficiently constrained regular expressions applied to attacker-controlled input:\n\n    if (issuu_id.match(/\\d+\\/\\d+/)) {\n        issuu_embed = \u0027#\u0027 + issuu_id;\n    } else if (issuu_id.match(/d=(.*)\u0026u=(.*)/)) {\n        issuu_embed = \u0027?\u0027 + issuu_id;\n    }\n\nThese expressions are not anchored and rely on greedy patterns (`.*`). When evaluated against specially crafted input, they may cause excessive backtracking, leading to high CPU consumption and potential denial of service.\n\n## Impact\n\nAn attacker able to control the `issuu_id` parameter could exploit this vulnerability to degrade performance or cause temporary service unavailability through CPU exhaustion.\n\nNo confidentiality or integrity impact was identified.\n\n## Fix https://github.com/AmauriC/tarteaucitron.js/commit/f0bbdac2fdf3cd24a325fc0928c0d34abf1b7b52\n\nThe logic was simplified and hardened by removing ambiguous regular expressions and enforcing strict input validation:\n\n    if (issuu_id.match(/^\\d+\\/\\d+$/)) {\n        issuu_embed = \u0027#\u0027 + issuu_id;\n    } else {\n        issuu_embed = \u0027?\u0027 + issuu_id;\n    }\n\nThis change eliminates the risk of catastrophic backtracking and prevents ReDoS conditions.\n\nAdditionally, code related to the legacy \"Alexa Rank\" service was removed. This service, historically provided by Alexa.com via browser toolbars and popularity rankings, has been deprecated for several years and is no longer operational. The Alexa domain is now exclusively associated with the Amazon voice assistant, and the original ranking service has been permanently discontinued.",
  "id": "GHSA-q5f6-qxm2-mcqm",
  "modified": "2026-01-13T21:41:31Z",
  "published": "2026-01-13T20:35:28Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/AmauriC/tarteaucitron.js/security/advisories/GHSA-q5f6-qxm2-mcqm"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-22809"
    },
    {
      "type": "WEB",
      "url": "https://github.com/AmauriC/tarteaucitron.js/commit/f0bbdac2fdf3cd24a325fc0928c0d34abf1b7b52"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/AmauriC/tarteaucitron.js"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "tarteaucitron.js has Regular Expression Denial of Service (ReDoS) vulnerability"
}

CVE-2026-22809 (GCVE-0-2026-22809)

Vulnerability from cvelistv5 – Published: 2026-01-13 19:36 – Updated: 2026-01-13 19:47

Title

tarteaucitron.js has Regular Expression Denial of Service (ReDoS) vulnerability

Summary

tarteaucitron.js is a compliant and accessible cookie banner. Prior to 1.29.0, a Regular Expression Denial of Service (ReDoS) vulnerability was identified in tarteaucitron.js in the handling of the issuu_id parameter. This vulnerability is fixed in 1.29.0.

Severity ?

4.4 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CWE

CWE-1333 - Inefficient Regular Expression Complexity

Assigner

GitHub_M

References

URL

Tags

	https://github.com/AmauriC/tarteaucitron.js/secur…	x_refsource_CONFIRM
	https://github.com/AmauriC/tarteaucitron.js/commi…	x_refsource_MISC

Impacted products

	Vendor	Product	Version
	AmauriC	tarteaucitron.js	Affected: < 1.29.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-22809",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-01-13T19:47:19.858449Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-01-13T19:47:24.567Z",
          "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 1.29.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "tarteaucitron.js is a compliant and accessible cookie banner. Prior to 1.29.0, a Regular Expression Denial of Service (ReDoS) vulnerability was identified in tarteaucitron.js in the handling of the issuu_id parameter. This vulnerability is fixed in 1.29.0."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 4.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "HIGH",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1333",
              "description": "CWE-1333: Inefficient Regular Expression Complexity",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-01-13T19:36:21.582Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/AmauriC/tarteaucitron.js/security/advisories/GHSA-q5f6-qxm2-mcqm",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/AmauriC/tarteaucitron.js/security/advisories/GHSA-q5f6-qxm2-mcqm"
        },
        {
          "name": "https://github.com/AmauriC/tarteaucitron.js/commit/f0bbdac2fdf3cd24a325fc0928c0d34abf1b7b52",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/AmauriC/tarteaucitron.js/commit/f0bbdac2fdf3cd24a325fc0928c0d34abf1b7b52"
        }
      ],
      "source": {
        "advisory": "GHSA-q5f6-qxm2-mcqm",
        "discovery": "UNKNOWN"
      },
      "title": "tarteaucitron.js has Regular Expression Denial of Service (ReDoS) vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-22809",
    "datePublished": "2026-01-13T19:36:21.582Z",
    "dateReserved": "2026-01-09T22:50:10.288Z",
    "dateUpdated": "2026-01-13T19:47:24.567Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

GHSA-Q5F6-QXM2-MCQM

Summary

Details

Impact

Fix https://github.com/AmauriC/tarteaucitron.js/commit/f0bbdac2fdf3cd24a325fc0928c0d34abf1b7b52

CVE-2026-22809 (GCVE-0-2026-22809)

Tags

Sightings

Nomenclature