CVE-2026-109379 Cockpit CMS 2.14.1 Account Enumeration via Timing Discrepancy in /auth/check
Unauthenticated attackers can enumerate valid user accounts in Cockpit CMS by measuring response time differences during login attempts.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-109379?
CVE-2026-109379 is a medium-severity vulnerability in cockpit-hq cockpit, published on 12 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Cockpit CMS 2.14.1 contains an observable timing discrepancy vulnerability that allows unauthenticated attackers to enumerate accounts due to an incomplete timing fix in /auth/check. Attackers can post login attempts and measure response times, since existing accounts incur two bcrypt operations versus one, revealing valid usernames and email addresses.
Weakness: CWE-208
Which versions are affected by CVE-2026-109379?
How do I fix CVE-2026-109379?
No fix has been published for CVE-2026-109379 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-109379 being exploited?
There is no known exploitation of CVE-2026-109379 in the wild and no public exploit code.
Sources
Also known as GHSA-gm9c-qwh2-h88c.