Vulnerability · Published Apr 22, 2026 · Assigned by VulnCheck

CVE-2026-41455WeKan < 8.35 SSRF via Webhook URL

High 8.5

In plain English

A high-severity server-side request forgery in wekan from wekan. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).

Severity (CVSS 3.1)8.5High

Exploit odds (30 days)0.2%top 85.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
wekan	wekan	0 – before 8.35.0

Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

References

https://github.com/wekan/wekan/releases/tag/v8.35 release-notes
https://github.com/wekan/wekan/commit/2cd702f48df2b8aef0e7381685f8e089986a18a4 patch
https://www.vulncheck.com/advisories/wekan-ssrf-via-webhook-url third-party-advisory