WeKan < 8.35 SSRF via Webhook URL
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA wekan (wekan) Fixed in 8.35.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
wekan 8.35.0
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2026-30043 WeKan < 8.35 Missing Authorization via Integration REST APIPriority LOW 39
Timeline
- 2026-10-02 Threatist record created from CVE-2026-41455
- 2026-10-03 Alias added: GHSA-qvhh-2f8h-hqgp
References
More wekan vulnerabilities
- TI-2026-40177 Improper authentication in wekan CVSS 3.1CRITICAL 9.8
- TI-2026-37989 Wekan: OIDC Account Takeover via Unconditional Email-Based Account Merge in onCreateUser hook CVSS 4.0CRITICAL 9.2
- TI-2026-48308 Improper privilege management in wekan CVSS 3.1HIGH 8.8
- TI-2026-48305 Wekan: SSRF filter bypass via DNS-resolving hostname in outgoing webhooks (incomplete fix of CVE-2026-53446) CVSS 3.1HIGH 8.5
- TI-2026-39911 Improper access control in wekan CVSS 3.1HIGH 8.5
- TI-2026-01855 WeKan Activity Publication activities.js LinkedBoardActivitiesBleed information disclosure CVSS 4.0MEDIUM 6.9
Sources
- CVE-2026-41455 · CVE Program
- CVE-2026-41455 · NVD
- FIRST EPSS
- GHSA-qvhh-2f8h-hqgp · GitHub Advisory Database · CC BY 4.0
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