Vulnerability · Published May 11, 2026 · Assigned by VulnCheck

CVE-2026-44997OpenClaw < 2026.4.22 - Security Envelope Constraint Bypass in ACP Child Sessions

Medium 4.3

In plain English

A medium-severity security flaw in OpenClaw from OpenClaw. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)4.3Medium

Exploit odds (30 days)0.2%top 87.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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 packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	openclaw	2026.4.22	GHSA-q3jj-46pq-826r

Affected products (as reported)

Vendor	Product	Versions
OpenClaw	OpenClaw	0 – before 2026.4.22

Weakness: CWE-266 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

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