CVE-2026-41455HIGH 8.5EPSS p14.3%

CVE-2026-41455CVE-2026-41455

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.

Scoring

CVSS 3.18.5 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
EPSS0.24% probability of exploitation · percentile 14.3% · 2026-06-18T12:00:27Z
Published2026-04-22
Last modified2026-05-26

Underlying weaknesses· 1

CWE-918

References

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

1

TypeTargetConfidenceTier
WeaknessServer-Side Request Forgery (SSRF)cwe-9180%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.