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.
History

Wed, 26 Aug 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 25 Aug 2026 23:30:00 +0000

Type Values Removed Values Added
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.
Title Kimai before 2.58.0 Authentication Bypass via Password Reset Link
First Time appeared Kimai
Kimai kimai
Weaknesses CWE-640
CPEs cpe:2.3:a:kimai:kimai:*:*:*:*:*:*:*:*
Vendors & Products Kimai
Kimai kimai
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

cvssV4_0

{'score': 8.7, '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published: 2026-08-25T23:19:03.107Z

Updated: 2026-08-26T14:17:15.767Z

Reserved: 2026-08-25T23:14:37.730Z

Link: CVE-2026-80196

cve-icon Vulnrichment

Updated: 2026-08-26T14:17:09.992Z

cve-icon NVD

Status : Deferred

Published: 2026-08-26T05:18:27.083

Modified: 2026-08-31T20:52:56.343

Link: CVE-2026-80196

cve-icon Redhat

No data.