What’s Vulnerable › Vulnerabilities

CVE-2026-32899: OpenClaw < 2026.2.25 - Sender Policy Bypass in Slack Reaction and Pin Event Handlers

• 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: 2026-03-21 · updated 2026-06-17
• Weakness: CWE-863

Description

OpenClaw versions prior to 2026.2.25 fail to consistently apply sender-policy checks to reaction_* and pin_* non-message events before adding them to system-event context. Attackers can bypass configured DM policies and channel user allowlists to inject unauthorized reaction and pin events from restricted senders.

Affected products

• OpenClaw: before 2026.2.25 — fixed in 2026.2.25

How to fix

Upgrade to a fixed version: OpenClaw 2026.2.25. Check the vendor advisory for mitigations.

References

• https://github.com/openclaw/openclaw/commit/75dfb71e4e8b7c2feba5a8ca662f92ea840e0147
• https://github.com/openclaw/openclaw/commit/aedf62ac7e669a89c7b299201bf6537dc6b12e0e
• https://github.com/openclaw/openclaw/security/advisories/GHSA-rm2p-j3r7-4x4j
• https://www.vulncheck.com/advisories/openclaw-sender-policy-bypass-in-slack-reaction-and-pin-event-handlers

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