CVE-2026-111714 tarteaucitron.js before 1.37.0 ReDoS via Unescaped Cookie Name in cookie.purge
Attackers can cause a denial of service by injecting malicious cookie names that trigger catastrophic backtracking in tarteaucitron.js.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-111714?
CVE-2026-111714 is a low-severity denial of service vulnerability in AmauriC tarteaucitron.js, published on 16 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-1333
Which versions are affected by CVE-2026-111714?
How do I fix CVE-2026-111714?
No fix has been published for CVE-2026-111714 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-111714 being exploited?
There is no known exploitation of CVE-2026-111714 in the wild and no public exploit code.
Sources
Also known as GHSA-h33v-xq5w-v2mw.