---
id: CVE-2025-65781
title: >-
  An issue was discovered in Wekan The Open Source kanban board system up to
  version 18.15, fixed in 18.16
summary: >-
  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 n…
severity: high
cvss: 8.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H'
cwe:
  - CWE-287
  - CWE-400
vendor: wekan_project
product: wekan
affected:
  - wekan < 8.16
patched:
  - wekan 8.16
published: '2025-12-15'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T13:10:00.187'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-65781'
references:
  - url: 'https://github.com/wekan/wekan'
    label: cve@mitre.org
  - url: >-
      https://github.com/wekan/wekan/blob/main/CHANGELOG.md#v816-2025-11-02-wekan--release
    label: cve@mitre.org
  - url: >-
      https://github.com/wekan/wekan/commit/ccd90343394f433b287733ad0a33c08e0a71f53c
    label: cve@mitre.org
  - url: 'https://wekan.fi/hall-of-fame/spacebleed/'
    label: cve@mitre.org
tags:
  - nvd
epss: 0.00342
epssPercentile: 0.25868
ingestedAt: '2026-10-14T13:30:58.427Z'
---

## Overview

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.

## Affected

- `wekan < 8.16`

## Remediation

Upgrade past the affected range:

- `wekan 8.16`