GHSA-q3jj-46pq-826r OpenClaw's ACP child sessions inherit subagent security envelope constraints

• npm openclaw: < 2026.4.22 → fixed in 2026.4.22

Summary ACP child sessions inherit subagent security envelope constraints. Affected Packages / Versions • Package: openclaw (npm) • Affected versions: <= 2026.4.21 • Fixed version: 2026.4.22 Impact A restricted subagent spawning an ACP child session could fail to carry forward subagent-only constraints such as depth, child-count limits, control scope, or target-agent restrictions. Fix ACP spawn now resolves and persists child subagent envelope fields, enforces maximum depth and active-child caps, and applies the inherited control scope to child ACP sessions. Fix Commit(s) • 31160dc069b7cc5d833b39c53736a41ad3befda2 Verification • The fix commit is contained in the public v2026.4.22 tag. • [email protected] is published on npm and the compiled package contains the fix. • Focused regression coverage for this path passed before publication. OpenClaw thanks @zsxsoft, @qclawer, and @KeenSecurityLab for reporting.