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CVE-2026-80196

Kimai before 2.58.0 Authentication Bypass via Password Reset Link

Published: Aug 25, 2026Updated: Aug 31, 2026 Sources: CVE List NVDCWE-640
7.5HIGH
NVD MITRE
EPSS Score
0.4%
Top 64.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-640

Affected Products

kimai
oss-project·DE
kimaiOn-prem
Enterprise Software / hr-finance

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

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

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