CVE-2026-80200

medium

Description

Kimai before 2.53.0 contains an open redirect vulnerability in the SAML authentication success handler that accepts unvalidated RelayState POST parameters as redirect destinations. Attackers with IdP access can supply malicious RelayState values to redirect authenticated users to attacker-controlled URLs for credential theft or phishing attacks.

References

https://www.vulncheck.com/advisories/kimai-before-2.53.0-open-redirect-via-relaystate

https://github.com/kimai/kimai/security/advisories/GHSA-3jp4-mhh4-gcgr

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-66222

Details

Source: Mitre, NVD

Published: 2026-08-26

Updated: 2026-10-08

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 4.7

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N

Severity: Medium

CVSS v4

Base Score: 5.3

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.0036