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Vulnerability record · CVE-2025-65781 · published 15 December 2025

CVE-2025-65781: Wekan project wekan improper authentication vulnerability

WWekan Project · Wekan

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.

8.2 CVSS 3.1 High EPSS 0.34% · top 74.8% CWE-287 · Improper authenticationCWE-400 · Uncontrolled resource consumption
8.2CVSS 3.1 base score
0.34%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/wekan/wekan Product
https://github.com/wekan/wekan/blob/main/CHANGELOG.md#v816-2025-11-02-wekan--release Release Notes
https://github.com/wekan/wekan/commit/ccd90343394f433b287733ad0a33c08e0a71f53c Patch
https://wekan.fi/hall-of-fame/spacebleed/ Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-65781), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.