CVE-2026-41455

HIGH 8.5

WeKan < 8.35 SSRF via Webhook URL

CVSS Score

8.5

EPSS Score

0.0%

EPSS Percentile

0th

WeKan before 8.35 contains a server-side request forgery vulnerability in webhook integration URL handling where the url schema 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.

CWE	CWE-918
Vendor	wekan
Product	wekan
Published	Apr 22, 2026
Last Updated	Apr 22, 2026

Stay Ahead of the Next One

Get instant alerts for wekan wekan

Be the first to know when new high vulnerabilities affecting wekan wekan are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

Low

Availability

None

Affected Versions

wekan / wekan

0 < 8.35.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/wekan/wekan/releases/tag/v8.35 github.com: https://github.com/wekan/wekan/commit/2cd702f48df2b8aef0e7381685f8e089986a18a4 vulncheck.com: https://www.vulncheck.com/advisories/wekan-ssrf-via-webhook-url

Credits

Rodolphe GHIO xet7