Auth bypass in Wekan
CVE-2026-30845
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.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.005 (41.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 41.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002
Affected products
- Wekan — versions >= 8.31.0, < 8.34
- Wekan Project
Weakness classification (CWE)
References
- securitylab.github.com/advisories/GHSL-2026-036_Wekan/ (Third Party Advisory)
- github.com/wekan/wekan/commit/8c00adc6b865653bd717a946dd646eb54ac78c9c (Patch)
- github.com/wekan/wekan/releases/tag/v8.34 (Release Notes)
Frequently asked questions
- What is CVE-2026-30845?
- CVE-2026-30845 is a high-severity vulnerability in Wekan, classified under Information Disclosure. CVSS score: 8.2/10. Published 2026-03-06.
- How severe is CVE-2026-30845?
- High severity. CVSS v3 base score is 8.2 out of 10.