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CVE-2026-56774

MEDIUM Exploitation: PoC
5.4
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-56774
State
PUBLISHED
Assigner
VulnCheck
Reserved
2026-06-23 01:22 UTC
Published
2026-06-25 18:10 UTC
Last updated
2026-06-25 21:33 UTC
Primary CWE
CWE-639
Authorization Bypass Through User-Controlled Key
Vendor / Product
kanboard / kanboard
Sources
cve.org  ·  NVD

Severity & Metrics

5.4 MEDIUM CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
SSVC — CISA Coordinator
Exploitation
PoC
Automatable
no
Tech. Impact
partial
Affected products (1)
VendorProductPlatformVersions
kanboard kanboard — 0 ≤ 1.2.52, 928c68aa2b7c00092dd71084d329b912e229f3d1
Weakness (CWE)
CWESourceDescription
CWE-639 cna Authorization Bypass Through User-Controlled Key
CVSS scores (2)
ScoreSeverityVersionSourceVector
5.4 MEDIUM 3.1 cna CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
5.3 MEDIUM 4.0 cna CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
References (4)
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