Vulnerability in Openclaw
CVE-2026-100554
OpenClaw (npm package 'openclaw') versions >= 2026.5.12 and < 2026.8.1 do not immediately invalidate Canvas HTTP authorization when a paired node is revoked. Node revocation invalidates the WebSocket client, but Canvas HTTP authorization continues to accept and renew the previously granted capability until WebSocket close cleanup completes. As a result, a revoked paired node can continue exercising its Canvas capability against the capability's configured routes during the close grace period. The issue is fixed in 2026.8.1; as a workaround, restart the Gateway after revoking a node that has Canvas access.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (12.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 12th percentile — 12.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
Weakness classification (CWE)
References
- GitHub Security Advisory (GHSA-g697-vv6h-r8hv) (vendor-advisory)
- VulnCheck Advisory: OpenClaw before 2026.8.1 Canvas Capability Revocation Bypass (third-party-advisory)
Frequently asked questions
- What is CVE-2026-100554?
- CVE-2026-100554 is a medium-severity vulnerability in Openclaw, classified under Insufficient Session Expiration. CVSS score: 4.2/10. Published 2026-09-26.
- How severe is CVE-2026-100554?
- Medium severity. CVSS v3 base score is 4.2 out of 10.