OpenClaw before 2026.8.1 Canvas Capability Revocation Bypass
Published Sep 26, 2026
2.3
LOWCVSS 4.0
EPSS 0.22%
Description
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.
Affected products
-
- Version 2026.5.12StatusaffectedConstraints<2026.8.1
- Version 2026.8.1StatusunaffectedConstraints-
- Version
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Sep 28, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Not enough EPSS history yet for a chart. At least two recorded scores are needed.
Percentile over time
Not enough EPSS history yet for a chart. At least two recorded scores are needed.
References (2)
- https://github.com/openclaw/openclaw/security/advisories/GHSA-g697-vv6h-r8hv vendor-advisory
- https://www.vulncheck.com/advisories/openclaw-before-2026.8.1-canvas-capability-revocation-bypass third-party-advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/openclaw/openclaw/security/advisories/GHSA-g697-vv6h-r8hv | vendor-advisory | |
| https://www.vulncheck.com/advisories/openclaw-before-2026.8.1-canvas-capability-revocation-bypass | third-party-advisory |
Change history (0)
No recorded changes yet.