Description
OpenClaw before 2026.4.22 contains a security envelope constraint bypass vulnerability allowing restricted subagents to spawn ACP child sessions that fail to inherit depth, child-count limits, control scope, or target-agent restrictions. Attackers can exploit this by spawning child sessions that bypass subagent-only constraints, potentially escalating privileges or accessing restricted resources.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OpenClaw | OpenClaw | < 2026.4.22 | 2026.4.22 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | openclaw | < 2026.4.22 | 2026.4.22 | GHSA-q3jj-46pq-826r |
References
- GitHub Security Advisory (GHSA-q3jj-46pq-826r) vendor-advisory
- Patch Commit patch
- VulnCheck Advisory: OpenClaw < 2026.4.22 - Security Envelope Constraint Bypass in ACP Child Sessions third-party-advisory