CVE-2026-80196 json
Kimai before 2.58.0 Authentication Bypass via Password Reset Link
published 2026-07-01 4 mo ago modified 2026-10-08 32 d ago also EUVD-2026-66218 , GHSA-m492-gv72-xvxj
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 41%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- packagist kimai/kimai 2.58.0
- kimai kimai 2.58.0
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2 mo ago
Exploit prediction
0.48% chance of exploitation in the next 30 days, higher than 41% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/kimai/kimai/security/advisories/GHSA-m492-gv72-xvxj referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.7 | 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 |
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| CNA | 4.0 | 8.7 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | kimai/kimai | <2.58.0 |
2.58.0 |
Affected products
- kimai kimai
Classification
- Weakness
-
- CWE-640 Weak Password Recovery Mechanism for Forgotten Password
References
-
github.com
/kimai/kimai/security/advisories/GHSA-m492-gv72-xvxj
vendor-advisory, exploit, web
-
vulncheck.com
/advisories/kimai-before-2.58.0-authentication-bypass-via-password-reset-link
third-party-advisory
-
github.com
/kimai/kimai
package
-
kimai.org
/en/security/ghsa-m492-gv72-xvxj
web
Sources
- CVE List CVE-2026-80196
- GitHub Advisory GHSA-m492-gv72-xvxj
- NVD CVE-2026-80196
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.