SSRF in Wekan
CVE-2026-41455
WeKan before 8.35 contains a server-side request forgery vulnerability in webhook integration URL handling where the URL scheme field accepts any string without protocol restriction or destination validation. Attackers who can create or modify integrations can set webhook URLs to internal network addresses, causing the server to issue HTTP POST requests to attacker-controlled internal targets with full board event payloads, and can additionally exploit response handling to overwrite arbitrary comment text without authorization checks.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (30.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.3% 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 0, 2cd702f48df2b8aef0e7381685f8e089986a18a4
Weakness classification (CWE)
References
- github.com/wekan/wekan/releases/tag/v8.35 (release-notes)
- github.com/wekan/wekan/commit/2cd702f48df2b8aef0e7381685f8e089986a18a4 (patch)
- www.vulncheck.com/advisories/wekan-ssrf-via-webhook-url (third-party-advisory)
Frequently asked questions
- What is CVE-2026-41455?
- CVE-2026-41455 is a high-severity vulnerability in Wekan, classified under Server-Side Request Forgery (SSRF). CVSS score: 8.5/10. Published 2026-04-22.
- How severe is CVE-2026-41455?
- High severity. CVSS v3 base score is 8.5 out of 10.