Vulnerability · Published Apr 20, 2026 · Assigned by VulnCheck

CVE-2026-41329OpenClaw < 2026.3.31 - Sandbox Bypass via Heartbeat Context Inheritance and senderIsOwner Escalation

Critical 9.9

In plain English

A critical-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 0.3% (higher than 23% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)9.9Critical

Exploit odds (30 days)0.3%top 77.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

OpenClaw before 2026.3.31 contains a sandbox bypass vulnerability allowing attackers to escalate privileges via heartbeat context inheritance and senderIsOwner parameter manipulation. Attackers can exploit improper context validation to bypass sandbox restrictions and achieve unauthorized privilege escalation.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	openclaw	2026.3.31	GHSA-g5cg-8x5w-7jpm

Affected products (as reported)

Vendor	Product	Versions
OpenClaw	OpenClaw	0 – before 2026.3.31

Weakness: CWE-648 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References

GitHub Security Advisory (GHSA-g5cg-8x5w-7jpm) vendor-advisory
Patch Commit patch
VulnCheck Advisory: OpenClaw < 2026.3.31 - Sandbox Bypass via Heartbeat Context Inheritance and senderIsOwner Escalation third-party-advisory