What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 8.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-22 · updated 2026-07-14
• Weakness: CWE-918

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

• WeKan: before 8.35.0 — fixed in 8.35.0

How to fix

Upgrade to a fixed version: WeKan 8.35.0. Check the vendor advisory for mitigations.

References

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

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