GHSA-xgwg-m42c-8q62: Duplicate Advisory: OpenClaw: Slack system events bypass sender authorization in member and message subtype handlers
(updated )
Duplicate Advisory
This advisory has been withdrawn because it is a duplicate of GHSA-v8cg-4474-49v8. This link is maintained to preserve external references.
Original Description
OpenClaw versions prior to 2026.2.26 fail to enforce sender authorization in member and message subtype system event handlers, allowing unauthorized events to be enqueued. Attackers can bypass Slack DM allowlists and per-channel user allowlists by sending system events from non-allowlisted senders through message_changed, message_deleted, and thread_broadcast events.
References
- github.com/advisories/GHSA-xgwg-m42c-8q62
- github.com/openclaw/openclaw/commit/3d30ba18a2aba1e1b302e77ff33145c3b06c01c8
- github.com/openclaw/openclaw/security/advisories/GHSA-v8cg-4474-49v8
- nvd.nist.gov/vuln/detail/CVE-2026-32895
- www.vulncheck.com/advisories/openclaw-sender-authorization-bypass-in-slack-system-event-handlers
Code Behaviors & Features
Detect and mitigate GHSA-xgwg-m42c-8q62 with GitLab Dependency Scanning
Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →