CVE-2026-80196 Kimai before 2.58.0 Authentication Bypass via Password Reset Link
Attackers can reuse intercepted password reset links to bypass authentication and take over user accounts even after password changes.
- 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-2026-80196?
CVE-2026-80196 is a high-severity authentication bypass vulnerability in kimai, published on 25 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Kimai before 2.58.0 contains an authentication bypass vulnerability where password reset links remain valid after password changes because the LoginLink signature covers only the user id, not the password hash. Attackers who intercept or cache a password reset link can use it up to 2 additional times within a 1-hour window to log in as the user even after the legitimate user has changed their password.
Weakness: CWE-640
Which versions are affected by CVE-2026-80196?
2 open source packages ship an affected version, including kimai/kimai.
| Package | Affected | Fixed in |
|---|---|---|
kimai/kimai Packagist | All versions | 2.58.0 |
kimai/kimai Packagist | All versions | 2.58.0 |
How do I fix CVE-2026-80196?
Upgrade kimai/kimai to 2.58.0 or later.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-80196 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-80196 exists.
Sources
Also known as GHSA-m492-gv72-xvxj, GHSA-vwp7-rf4h-hh34.