---
id: CVE-2026-111714
title: tarteaucitron.js before 1.37.0 ReDoS via Unescaped Cookie Name in cookie.purge
summary: >-
  tarteaucitron.js before 1.37.0 contains a regular expression denial of service
  vulnerability that allows attackers to block visitor pages by supplying
  unescaped cookie names to cookie.purge. Attackers can plant a cookie from a
  sibling su…
severity: low
cvss: 3.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L'
cvssSource: cna
cwe:
  - CWE-1333
vendor: AmauriC
product: tarteaucitron.js
affected:
  - tarteaucitron.js < 1.37.0
published: '2026-10-16'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T17:40:03.460Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-111714'
references:
  - url: >-
      https://github.com/AmauriC/tarteaucitron.js/commit/60faaba5fd541cad770549d422fc4ac7de657e56
  - url: 'https://github.com/AmauriC/tarteaucitron.js/releases/tag/v1.37.0'
    label: tarteaucitron.js v1.37.0 Release Notes
  - url: >-
      https://github.com/AmauriC/tarteaucitron.js/blob/v1.36.0/tarteaucitron.js#L2169-L2175
  - url: >-
      https://www.vulncheck.com/advisories/tarteaucitron-js-before-1.37.0-redos-via-unescaped-cookie-name-in-cookie-purge
    label: >-
      VulnCheck Advisory: tarteaucitron.js before 1.37.0 ReDoS via Unescaped
      Cookie Name in cookie.purge
tags:
  - cve.org
ingestedAt: '2026-10-16T18:43:08.641Z'
---

## Overview

tarteaucitron.js before 1.37.0 contains a regular expression denial of service vulnerability that allows attackers to block visitor pages by supplying unescaped cookie names to cookie.purge. Attackers can plant a cookie from a sibling subdomain or inject a purgeBtn element with a catastrophic-backtracking data-cookie pattern that freezes the page when the purge button is clicked.

## Affected

- `tarteaucitron.js < 1.37.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.