Auth bypass in Wekan Project
CVE-2025-65781
An issue was discovered in Wekan The Open Source kanban board system up to version 18.15, fixed in 18.16. Attachment upload API treats the Authorization bearer value as a userId and enters a non-terminating body-handling branch for any non-empty bearer token, enabling trivial application-layer DoS and latent identity-spoofing.
Vulnerability class: Broken Authentication
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H.
EPSS exploit prediction
EPSS: 0.003 (25.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 25.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.000
Affected products
Weakness classification (CWE)
References
- github.com/wekan/wekan (Product)
- wekan.fi/hall-of-fame/spacebleed/ (Vendor Advisory)
- github.com/wekan/wekan/blob/main/CHANGELOG.md (Release Notes)
- github.com/wekan/wekan/commit/ccd90343394f433b287733ad0a33c08e0a71f53c (Patch)
Frequently asked questions
- What is CVE-2025-65781?
- CVE-2025-65781 is a high-severity vulnerability in Wekan Project, classified under Improper Authentication. CVSS score: 8.2/10. Published 2025-12-15.
- How severe is CVE-2025-65781?
- High severity. CVSS v3 base score is 8.2 out of 10.