MEDIUM

CVE-2026-56774

2026-06-25 CVSS v3.1

CVSS

5.4

Description

Kanboard through 1.2.52, fixed in commit 928c68a, UserViewController::removeSession fails to validate the session id parameter before passing it to RememberMeSessionModel::remove, allowing authenticated users to delete other users' Remember Me sessions. Attackers can enumerate sequential session IDs and mass-invalidate persistent login sessions of any user, including administrators, forcing re-authentication and causing denial of service.

Weakness (CWE)

CWE-639 Authorization Bypass (IDOR)

EPSS Score

0.48%

Probability of exploitation in next 30 days

40.3th percentile

References

https://github.com/kanboard/kanboard/commit/928c68aa2b7c00092dd71084d329b912e229f3d1 https://github.com/kanboard/kanboard/issues/5829 https://github.com/kanboard/kanboard/pull/5831 https://www.vulncheck.com/advisories/kanboard-cross-user-deletion-of-persistent-login-sessions-via-unvalidated-session-id

View on dbcve.org

Base CVE data derived from NVD (public domain). Enrichment by dbcve.org (CC-BY-4.0). Fetched via API.

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