CVE-2026-80196
HIGHDescription
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.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Exploit Intelligence
Low risk: more likely to be exploited than 35% of all known CVEs.
References
Related Vulnerabilities
Other CWE-640 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2019-18818 | Critical | 9.8 | 98% | - | - |
| CVE-2023-7028 | Critical | 10.0 | 95% | KEV | Fix |
| CVE-2017-7615 | High | 8.8 | 91% | - | - |
| CVE-2024-2862 | Critical | 9.1 | 51% | - | - |
| CVE-2025-6216 | Critical | 9.8 | 35% | - | Fix |
| CVE-2019-19844 | Critical | 9.8 | 35% | - | Fix |
Common questions
How do I fix CVE-2026-80196?
No published fix for CVE-2026-80196 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2026-80196 being actively exploited?
Not that we know of. CVE-2026-80196 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.42% is the estimated probability that it will be exploited in the next 30 days. That is higher than 35% of all scored CVEs.
How severe is CVE-2026-80196?
CVE-2026-80196 has a CVSS v3 base score of 7.5, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-08-26.