OpenClaw Privilege Escalation CVE-2026-41329 Patched
Summary
The Centre for Cybersecurity Belgium has issued an urgent security advisory warning of CVE-2026-41329, a critical privilege escalation vulnerability in OpenClaw versions up to and including 2026.3.28 with CVSS 9.9. The flaw stems from improper context validation during heartbeat processing that allows attackers to bypass sandbox restrictions without credentials. CCB strongly recommends immediate patching to version 2026.3.31 and enhanced monitoring for suspicious activity.
“Because no user interaction is required, any exposed OpenClaw instance running under the right conditions is potentially at risk.”
Organisations running OpenClaw in internal environments where automated pipelines interact with sensitive systems or data should treat this as an immediate priority. Even though patching prevents future exploitation, it does not remediate historic compromise — affected parties should review logs for indicators of prior exploitation and consider whether a separate incident response is warranted.
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What changed
CCB published a critical security advisory for CVE-2026-41329, a privilege escalation vulnerability in OpenClaw (an open source AI agent platform) affecting versions up to 2026.3.28. The flaw allows attackers to exploit improper context validation during heartbeat processing to manipulate the senderIsOwner parameter, bypass sandbox restrictions, and gain escalated privileges remotely without user interaction. CCB strongly recommends immediate patching to version 2026.3.31 and enhanced monitoring for indicators of compromise. While patching prevents future exploitation, it does not remediate historic compromise.
Organisations running OpenClaw in internal environments with automated pipelines interacting with sensitive systems should treat this as a priority security incident and update immediately. Security teams should also review deployment configurations and consider restricting network exposure of OpenClaw instances until patched. Any suspected intrusion should be reported to CCB via their incident reporting portal.
What to do next
- Install updates for vulnerable devices with the highest priority after thorough testing
- Upscale monitoring and detection capabilities to identify any related suspicious activity and ensure a swift response in case of intrusion
Archived snapshot
Apr 23, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Warning: Privilege Escalation in OpenClaw, Patch Immediately!
Image
Published : 21/04/2026
- Last update: 21/04/2026
- Affected software: → OpenClaw <=2026.3.28
- Type: Privilege Escalation
- CVE/CVSS → CVE-2026-41329: CVSS 9.9 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H)
Sources
https://github.com/openclaw/openclaw/security/advisories/GHSA-g5cg-8x5w-7jpm
Risks
A newly discovered vulnerability in OpenClaw allows attackers to bypass sandbox restrictions and escalate privileges, potentially exposing sensitive systems and compromising organizational security.
OpenClaw is an open source, self-hosted AI agent platform designed for workflow automation, event-driven processing, and task orchestration. It is commonly deployed in internal environments where automated pipelines interact directly with sensitive systems and data.
If exploited this could lead to data breaches, system compromise, and operational downtime impacting confidentiality, integrity, and availability of critical businesses.
Description
A critical security vulnerability, CVE-2026-41329, has been identified in OpenClaw versions up to and including 2026.3.28. This flaw arises from improper context validation during heartbeat processing, which allows attackers to exploit context inheritance mechanisms and manipulate the senderIsOwner parameter to bypass sandbox restrictions and escalate privileges.
In affected versions, an attacker can exploit this vulnerability remotely without requiring prior credentials, though exploitation depends on specific deployment conditions being met. This improper validation allows sandbox restrictions to be bypassed entirely, granting the attacker escalated privileges within the platform. Because no user interaction is required, any exposed OpenClaw instance running under the right conditions is potentially at risk. The vulnerability has been patched in version 2026.3.31, and users are strongly advised to update immediately.
Recommended Actions
Patch
The Centre for Cybersecurity Belgium strongly recommends installing updates for vulnerable devices with the highest priority after thorough testing.
Monitor/Detect
The CCB recommends organizations upscale monitoring and detection capabilities to identify any related suspicious activity and ensure a swift response in case of an intrusion.
In case of an intrusion, you can report an incident via https://ccb.belgium.be/en/cert/report-incident.
While patching appliances or software to the newest version may protect against future exploitation, it does not remediate historic compromise.
References
https://github.com/openclaw/openclaw/security/advisories/GHSA-g5cg-8x5w-7jpm
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Source document text, dates, docket IDs, and authority are extracted directly from CCB.
The summary, classification, recommended actions, deadlines, and penalty information are AI-generated from the original text and may contain errors. Always verify against the source document.
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