CVE-2026-41455

MEDIUM
MEDIUM Priority: 0.01 BB Relevance: 63/100
Published: 2026-04-22 Modified: 2026-11-08 First seen: 2026-11-08 Status: active

Attack Surface

Network Low Complexity No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
AT: None
VC: None
VI: Low
VA: None

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 Software (1)

VendorProductVersion
wekan wekan 0 < 8.35.0

Bug Bounty Relevance

63 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

6.3 / 10.0 v4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:H/SI:L/SA:N

EPSS — Exploitation Probability

0.24%
Raw Score 0.002360
Percentile 14.7%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00236
2026-11-12
0.00236
2026-11-10
0.00236
2026-11-09
0.00236
2026-11-08
0.00236

Intelligence Sources

mitre ref →