CVE-2026-43534 OpenClaw < 2026.4.10 - Unsanitized External Input in Agent Hook Events

Critical 9.3 Published Updated

Attackers can inject malicious hook names into agent events to escalate privileges and execute code within the OpenClaw agent context.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2026-43534?

CVE-2026-43534 is a critical code injection vulnerability in Openclaw Openclaw, published on 5 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

OpenClaw before 2026.4.10 contains an input validation vulnerability that allows external hook metadata to be enqueued as trusted system events. Attackers can supply malicious hook names to escalate untrusted input into higher-trust agent context.

Weakness: CWE-345

Which versions are affected by CVE-2026-43534?

2 open source packages ship an affected version, including openclaw. It affects 1 product.

PackageAffectedFixed in
openclaw npmAll versions2026.4.10
openclaw npmAll versions2026.4.10

Products include Openclaw Openclaw.

How do I fix CVE-2026-43534?

Upgrade openclaw to 2026.4.10 or later.

Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.

Is CVE-2026-43534 being exploited?

There is no known exploitation of CVE-2026-43534 in the wild and no public exploit code.

All Openclaw Openclaw vulnerabilities

Sources

Also known as GHSA-7g8c-cfr3-vqqr, MINI-6mjm-gq94-45wm.

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