AI agent vulnerability · OpenClaw

CVE-2026-44997: OpenClaw's ACP child sessions inherit subagent security envelope constraints

mediumCVSS 4.0 5.3GHSA-q3jj-46pq-826r

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.

Published May 4, 2026 · Updated May 29, 2026

Affected packages

openclaw

Ecosystem: npm
Affected: <= 2026.4.21
Fixed in: 2026.4.22
Check: npm ls openclaw

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

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.

Credited to zsxsoft, qclawer, KeenSecurityLab.

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

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