What’s Vulnerable › Vulnerabilities

CVE-2026-111714: tarteaucitron.js before 1.37.0 ReDoS via Unescaped Cookie Name in cookie.purge

• Severity: low (CVSS 3.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-16 · updated 2026-10-21
• Weakness: CWE-1333

Description

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 products

• AmauriC tarteaucitron.js: before 1.37.0 — fixed in 1.37.0

How to fix

Upgrade to a fixed version: AmauriC tarteaucitron.js 1.37.0. Check the vendor advisory for mitigations.

References

• https://github.com/AmauriC/tarteaucitron.js/blob/v1.36.0/tarteaucitron.js#L2169-L2175
• https://github.com/AmauriC/tarteaucitron.js/commit/60faaba5fd541cad770549d422fc4ac7de657e56
• https://github.com/AmauriC/tarteaucitron.js/releases/tag/v1.37.0
• https://www.vulncheck.com/advisories/tarteaucitron-js-before-1.37.0-redos-via-unescaped-cookie-name-in-cookie-purge

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