Auth bypass in Openclaw
CVE-2026-31998
OpenClaw versions 2026.2.22 and 2026.2.23 contain an authorization bypass vulnerability in the synology-chat channel plugin where dmPolicy set to allowlist with empty allowedUserIds fails open. Attackers with Synology sender access can bypass authorization checks and trigger unauthorized agent dispatch and downstream tool actions.
Vulnerability class: Broken Access Control
EPSS: 0.003 (24.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L.
Affected products
- Openclaw — versions 2026.2.22, 2026.2.24
Weakness classification (CWE)
References
- disclosure@vulncheck.com (vendor-advisory, Mitigation, Vendor Advisory, third-party-advisory)
- disclosure@vulncheck.com (Patch, patch)
- disclosure@vulncheck.com (Patch, patch)
- disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-31998?
- CVE-2026-31998 is a high-severity vulnerability in Openclaw, classified under Incorrect Authorization. CVSS score: 8.6/10. Published 2026-03-19.
- How severe is CVE-2026-31998?
- High severity. CVSS v3 base score is 8.6 out of 10.