Vulnerability in Amauric Tarteaucitron.js
CVE-2026-111714
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.
Vulnerability class: ReDoS (Regular Expression Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.1 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/AmauriC/tarteaucitron.js/commit/60faaba5fd541cad770549d422fc4ac7de65… (patch)
- github.com/AmauriC/tarteaucitron.js/releases/tag/v1.37.0 (release-notes)
- github.com/AmauriC/tarteaucitron.js/blob/v1.36.0/tarteaucitron.js (technical-description)
- www.vulncheck.com/advisories/tarteaucitron-js-before-1.37.0-redos-via-unescaped… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-111714?
- CVE-2026-111714 is a low-severity vulnerability in Amauric Tarteaucitron.js, classified under Inefficient Regular Expression Complexity. CVSS score: 3.1/10. Published 2026-10-16.
- How severe is CVE-2026-111714?
- Low severity. CVSS v3 base score is 3.1 out of 10.