CVE-2026-41455 WeKan < 8.35 SSRF via Webhook URL
Attackers can exploit SSRF in WeKan webhooks to access internal networks and modify comment data without authorization.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-41455?
CVE-2026-41455 is a medium-severity server-side request forgery vulnerability in wekan, published on 22 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.
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.
Weakness: CWE-918
Which versions are affected by CVE-2026-41455?
How do I fix CVE-2026-41455?
No fix has been published for CVE-2026-41455 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-41455 being exploited?
There is no known exploitation of CVE-2026-41455 in the wild and no public exploit code.
Sources
Also known as GHSA-qvhh-2f8h-hqgp.