GHSA-qh2f-99mv-mrcf: OpenClaw: Bundle MCP loopback could miss its exec denylist on session spawn
OpenClaw contains a vulnerability in its bundled MCP loopback feature where the execution denylist may be bypassed during session spawn. This allows a caller with access to the affected session-spawn path to start a session with broader command execution capabilities than intended. The issue affects versions prior to 2026.5.12. The vulnerability does not alter OpenClaw's trusted-operator model but could be exploited if lower-trust input reaches the vulnerable path. Mitigation involves restricting access to trusted operators and applying the patch in version 2026.5.12.
AI Analysis
Technical Summary
The vulnerability in OpenClaw's bundled MCP loopback feature allows the execution denylist to be missed on session spawn. A caller able to reach this session-spawn path can bypass the denylist intended to restrict commands, potentially gaining broader command execution capabilities. The impact depends on operator configuration and whether untrusted inputs can access this path. The vulnerability is fixed starting with OpenClaw version 2026.5.12.
Potential Impact
If the affected feature is enabled and accessible, an attacker or lower-trust user could initiate a session with elevated command execution permissions beyond what the denylist intended to restrict. This could lead to unauthorized command execution within the OpenClaw environment, depending on configuration and access controls.
Mitigation Recommendations
Restrict bundled MCP loopback access to trusted operators until the patch is applied. Keep channel and tool allowlists narrow, avoid sharing a Gateway between mutually untrusted users, and disable the affected feature if it is not needed. Upgrade to OpenClaw version 2026.5.12 or later to apply the official fix.
GHSA-qh2f-99mv-mrcf: OpenClaw: Bundle MCP loopback could miss its exec denylist on session spawn
Description
OpenClaw contains a vulnerability in its bundled MCP loopback feature where the execution denylist may be bypassed during session spawn. This allows a caller with access to the affected session-spawn path to start a session with broader command execution capabilities than intended. The issue affects versions prior to 2026.5.12. The vulnerability does not alter OpenClaw's trusted-operator model but could be exploited if lower-trust input reaches the vulnerable path. Mitigation involves restricting access to trusted operators and applying the patch in version 2026.5.12.
CVSS v4.0
Affected software
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in OpenClaw's bundled MCP loopback feature allows the execution denylist to be missed on session spawn. A caller able to reach this session-spawn path can bypass the denylist intended to restrict commands, potentially gaining broader command execution capabilities. The impact depends on operator configuration and whether untrusted inputs can access this path. The vulnerability is fixed starting with OpenClaw version 2026.5.12.
Potential Impact
If the affected feature is enabled and accessible, an attacker or lower-trust user could initiate a session with elevated command execution permissions beyond what the denylist intended to restrict. This could lead to unauthorized command execution within the OpenClaw environment, depending on configuration and access controls.
Mitigation Recommendations
Restrict bundled MCP loopback access to trusted operators until the patch is applied. Keep channel and tool allowlists narrow, avoid sharing a Gateway between mutually untrusted users, and disable the affected feature if it is not needed. Upgrade to OpenClaw version 2026.5.12 or later to apply the official fix.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-qh2f-99mv-mrcf
- Osv Schema Version
- 1.4.0
- Aliases
- []
- Ecosystems
- ["npm"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 4.0
Threat ID: 6a46ecd427e9c7971943f38b
Added to database: 07/02/2026, 22:57:24 UTC
Last enriched: 07/02/2026, 23:22:10 UTC
Last updated: 07/02/2026, 23:22:10 UTC
Views: 2
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