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OpenClaw CVE-2026-43578

| EUVD-2026-28168 CRITICAL
Incomplete List of Disallowed Inputs (CWE-184)
2026-05-06 disclosure@vulncheck.com
9.1
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

4
Patch available
May 06, 2026 - 21:03 EUVD
Source Code Evidence Fetched
May 06, 2026 - 20:33 vuln.today
Analysis Generated
May 06, 2026 - 20:33 vuln.today
CVE Published
May 06, 2026 - 20:16 nvd
CRITICAL 9.1

DescriptionNVD

OpenClaw versions 2026.3.31 before 2026.4.10 contain a privilege escalation vulnerability where heartbeat owner downgrade detection misses local background async exec completion events. Attackers can exploit this by providing untrusted completion content to leave a run in a more privileged context than intended.

AnalysisAI

Privilege escalation in OpenClaw 2026.3.31 through 2026.4.9 allows remote unauthenticated attackers to maintain elevated execution context by injecting malicious async completion events that bypass heartbeat owner-downgrade detection. The flaw stems from incomplete pattern matching in local background exec completion filtering, enabling attackers to submit untrusted completion content that prevents proper privilege de-escalation after operations complete. …

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RemediationAI

Within 24 hours: Identify all systems running OpenClaw versions 2026.3.31-2026.4.9 and isolate them from production if feasible; verify current deployed version across infrastructure. Within 7 days: Apply vendor-released patch to upgrade all affected instances to OpenClaw 2026.4.10 or later; test patches in staging environment before production deployment. …

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CVE-2026-43578 vulnerability details – vuln.today

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