CVE-2026-32895

OpenClaw < 2026.2.26 - Sender Authorization Bypass in Slack System Event Handlers

CVSS 5.3 MEDIUMEPSS 0.2%CWE-863

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 5.3EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

21 Mar 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Affected products

OpenClaw · OpenClaw

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References

https://github.com/openclaw/openclaw/commit/3d30ba18a2aba1e1b302e77ff33145c3b06c01c8 https://github.com/openclaw/openclaw/security/advisories/GHSA-v8cg-4474-49v8 https://www.vulncheck.com/advisories/openclaw-sender-authorization-bypass-in-slack-system-event-handlers