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2.3

tarteaucitron.js can freeze pages with crafted cookie

CVE-2026-111714 · published 2 days ago
Summary

Versions of tarteaucitron.js before 1.37 let an attacker create a specially formatted cookie name that causes the page to stop responding when the user clicks the purge button. This can be used to block visitors from viewing the site. Upgrade to version 1.37 or later to stop the problem.

What to do
  • Update amauric tarteaucitron.js to version 1.37.0 or later.
Affected software
VendorProductAffected versions
amauric tarteaucitron.js < 1.37.0
Original advisory text
tarteaucitron.js before 1.37.0 ReDoS via Unescaped Cookie Name in cookie.purge
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.
References
Fix within
Internet-facing 60 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit (estimated)
  • Gives an attacker partial control (estimated)
Severity
2.3 Low
Exploitation
<1% chance of attack within 30 days
Type
CWE-1333Inefficient Regular Expression Complexity (ReDoS)
Timeline
Published16 Oct 2026
Updated17 Oct 2026
First seen16 Oct 2026
Sources
CVE-2026-111714 · NVD
CVE-2026-111714 · MITRE
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