OpenClaw: Sandboxed sessions_spawn(runtime="acp") bypassed sandbox inheritance and allowed host ACP initialization
Key facts
- Attack vector
- —
- Privileges required
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- User interaction
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- Attack complexity
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- Impact type
- Privilege escalation
- Confidentiality · integrity · availability
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- Fix status
- Fixed
No CVSS vector from any source. Fix status from GitHub. Impact type from CWE-269.
Summary
### Summary Sandboxed `sessions_spawn(runtime="acp")` could bypass sandbox inheritance and initialize host-side ACP runtime. The fix now fail-closes ACP spawn from sandboxed requester sessions and rejects `sandbox="require"` for `runtime="acp"`. ### Affected Packages / Versions - Package: `openclaw` (npm) - Latest published npm version at triage time: `2026.3.1` (March 2, 2026) - Vulnerable range: `<=2026.3.1` - Patched release: `2026.3.2` (released) ### Technical Details - Root cause: `runtime="subagent"` enforced sandbox inheritance, while `runtime="acp"` did not enforce equivalent sandbox/runtime checks. - Security impact: sandbox-boundary bypass into host-side ACP initialization. - Fixed behavior: - deny ACP spawn when requester runtime is sandboxed - deny `sessions_spawn` with `runtime="acp", sandbox="require"` - align sandboxed prompt guidance to avoid advertising blocked ACP paths ### Fix Commit(s) - `ac11f0af731d41743ba02d8595f4d0fe747336e3` - `c703aa0fe92df9fb71cf254fc46991e05fba2114`
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | openclaw (npm) | before 2026.3.2 | 2026.3.2 | Patch available | GHSA-474h-prjg-mmw3 |
- openclaw (npm) Vendor— Affected before 2026.3.2 Fixed in 2026.3.2 Patch available GHSA-474h-prjg-mmw3
Remediation
- Fix · GHSA-474h-prjg-mmw3 openclaw (npm) Fixed in 2026.3.2 Advisory →
Timeline
- 2026-10-03 Threatist record created from GHSA-474h-prjg-mmw3
References
Sources
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