CVE-2026-35642: OpenClaw < 2026.3.25 - Authorization Bypass in Group Reactions via requireMention Bypass

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-04-09 · updated 2026-06-17
Weakness: CWE-288

Description

OpenClaw before 2026.3.25 contains an authorization bypass vulnerability where group reaction events bypass the requireMention access control mechanism. Attackers can trigger reactions in mention-gated groups to enqueue agent-visible system events that should remain restricted.

Affected products

OpenClaw: before 2026.3.25 — fixed in 2026.3.25

How to fix

Upgrade to a fixed version: OpenClaw 2026.3.25. Check the vendor advisory for mitigations.

References

https://github.com/openclaw/openclaw/commit/f8c98630785288cc1f1d0893503ef3b653a3cede
https://github.com/openclaw/openclaw/security/advisories/GHSA-mw7w-g3mg-xqm7
https://www.vulncheck.com/advisories/openclaw-authorization-bypass-in-group-reactions-via-requiremention-bypass

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