# CVE-2025-65778: An issue was discovered in Wekan The Open Source kanban board system up to version 18.15, fixed in 18.16. Uploaded…

Source: https://junglewise.ai/threats/cve-2025-65778-an-issue-was-discovered-in-wekan-the-open-source-kanban-board  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2025-12-15  
License: CC BY 4.0 with a link back

CVE-2025-65778 · Severity: high · CVSS 8.1 · Published 2025-12-15

An issue was discovered in Wekan The Open Source kanban board system up to version 18.15, fixed in 18.16. Uploaded attachments can be served with attacker-controlled Content-Type (text/html), allowing execution of attacker-supplied HTML/JS in the application's origin and enabling session/token theft and CSRF actions.

Technologies: [Wekan Project Wekan](https://junglewise.ai/threats/technologies/wekan-project-wekan). Vendors: [Wekan Project](https://junglewise.ai/threats/vendors/wekan-project).

## Quick answers

**Is CVE-2025-65778 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-65778 being exploited in the wild.

**How severe is CVE-2025-65778?** High severity, with a CVSS score of 8.1, published 15 December 2025.

**Which products and versions are affected?** Wekan Project Wekan. The advisory does not name versions.

**Is there a fix for CVE-2025-65778?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**Am I affected by CVE-2025-65778?** Check whether you run Wekan Project Wekan. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- Wekan Project Wekan

## Related threats

- [An issue was discovered in Wekan The Open Source kanban board system up to version 18.15, fixed in 18.16…](https://junglewise.ai/threats/cve-2025-65782-an-issue-was-discovered-in-wekan-the-open-source-kanban-board)
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