CVE-2026-100554

MEDIUM 4.2

OpenClaw before 2026.8.1 Canvas Capability Revocation Bypass

CVSS Score

4.2

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-613
Vendor	openclaw
Product	openclaw
Published	Sep 26, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

None

Affected Versions

OpenClaw / OpenClaw

2026.5.12 < 2026.8.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/openclaw/openclaw/security/advisories/GHSA-g697-vv6h-r8hv vulncheck.com: https://www.vulncheck.com/advisories/openclaw-before-2026.8.1-canvas-capability-revocation-bypass

Credits

🔍 andrewCantina