CVE-2026-41455
MEDIUM EPSS 14.4%
Published Apr 22, 20262mo ago · Modified Jun 17, 20261w ago
6.3 CVSS 4.0
Published Apr 22, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago
Description
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
14.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-918 Server-Side Request Forgery (SSRF) Validation
References 3
- github.com https://github.com/wekan/wekan/commit/2cd702f48df2b8aef0e7381685f8e089986a18a4
- github.com https://github.com/wekan/wekan/releases/tag/v8.35
- vulncheck.com https://www.vulncheck.com/advisories/wekan-ssrf-via-webhook-url
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.