CVE-2025-65781: wekan Auth Bypass — Fix

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.

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CVSS v3.1 Score

8.2

HIGH

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

Weakness Type (CWE)

CWE-287 Improper Authentication

CWE-400 Uncontrolled Resource Consumption

Affected Products

Vendor	Product	Versions
wekan_project	wekan	< 8.16

References

Advisories & Patches

https://github.com/wekan/wekan/commit/ccd90343394f433b287733ad0a33c08e0a71f53c https://wekan.fi/hall-of-fame/spacebleed/

Other References

https://github.com/wekan/wekan https://github.com/wekan/wekan/blob/main/CHANGELOG.md#v816-2025-11-02-wekan--release

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 8.2 (HIGH).

How severe is CVE-2025-65781? +

CVE-2025-65781 has a CVSS v3.1 score of 8.2 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-65781? +

CVE-2025-65781 affects products from wekan_project, specifically: wekan. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-65781? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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