---
id: "CVE-2026-111714"
kind: "vulnerability"
aliases: ["CVE-2026-111714"]
title: "tarteaucitron.js: regex in cookie purge freezes visitor pages"
severity: "low"
cvss: 3.1
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["cookie-consent", "frontend", "javascript", "package", "tarteaucitron"]
not_affected_if: ["version-1.37.0-or-later"]
published_at: "2026-10-16T18:17:55+00:00"
first_seen_at: "2026-10-23T21:57:14+00:00"
updated_at: "2026-10-25T04:47:50+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-111714", "first_seen_at": "2026-10-23T21:57:14+00:00"}]
---

# tarteaucitron.js: regex in cookie purge freezes visitor pages

tarteaucitron.js before 1.37.0 builds a regular expression from unescaped cookie names passed to cookie.purge. A cookie planted from a sibling subdomain or a crafted purgeBtn data-cookie value can cause catastrophic backtracking, freezing the page when the purge button is clicked.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed version of tarteaucitron.js in the site's package.json or the loaded script, e.g. `grep -i version node_modules/tarteaucitron/package.json`
- Look for purge buttons or data-cookie attributes that take user-controlled values

## Fix

- Upgrade tarteaucitron.js to `1.37.0` or later

## Timeline

- 2026-10-23T21:57:14+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-111714

## From the sources

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.

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