SSRF in Wekan
CVE-2026-30844
Wekan is an open source kanban tool built with Meteor. Versions 8.32 and 8.33 are vulnerable to Server-Side Request Forgery (SSRF) via attachment URL loading. During board import in Wekan, attachment URLs from user-supplied JSON data are fetched directly by the server without any URL validation or filtering, affecting both the Wekan and Trello import flows. The parseActivities() and parseActions() methods extract user-controlled attachment URLs, which are then passed directly to Attachments.load() for download with no sanitization. This Server-Side Request Forgery (SSRF) vulnerability allows any authenticated user to make the server issue arbitrary HTTP requests, potentially accessing internal network services such as cloud instance metadata endpoints (exposing IAM credentials), internal databases, and admin panels that are otherwise unreachable from outside the network. This issue has been fixed in version 8.34.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (33.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 33.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.004 · change: +0.002
Affected products
- Wekan — versions >= 8.32, < 8.34
- Wekan Project — versions 8.32, 8.33
Weakness classification (CWE)
References
- securitylab.github.com/advisories/GHSL-2026-045_Wekan/ (Third Party Advisory)
- github.com/wekan/wekan/commit/62216e36c15f55d4ef6cb97313db3aa54fc77fe0 (Patch)
- github.com/wekan/wekan/releases/tag/v8.34 (Release Notes)
Frequently asked questions
- What is CVE-2026-30844?
- CVE-2026-30844 is a high-severity vulnerability in Wekan, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.1/10. Published 2026-03-06.
- How severe is CVE-2026-30844?
- High severity. CVSS v3 base score is 8.1 out of 10.