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
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.006 (44.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.006 · change: +0.002
Affected products
- Openclaw — versions 2026.2.22, 2026.2.24
Weakness classification (CWE)
References
- github.com/openclaw/openclaw/security/advisories/GHSA-gw85-xp4q-5gp9 (vendor-advisory, Mitigation, Vendor Advisory, third-party-advisory)
- github.com/openclaw/openclaw/commit/0ee30361b8f6ef3f110f3a7b001da6dd3df96bb5 (Patch, patch)
- github.com/openclaw/openclaw/commit/7655c0cb3a47d0647cbbf5284e177f90b4b82ddb (Patch, patch)
- www.vulncheck.com/advisories/openclaw-authorization-bypass-in-synology-chat-plu… (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.