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CVE-2026-43534

Openclaw vulnerability

9.1 CRITICALEPSS 0.30%
  1. Published5 May 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

Openclaw< 2026.4.10

Remediation

Fixed in
Openclaw≥ 2026.4.10

References

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Frequently asked

Is CVE-2026-43534 being actively exploited?

CVE-2026-43534 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.30%.

How severe is CVE-2026-43534?

CVE-2026-43534 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.30% probability of exploitation.

Which products are affected by CVE-2026-43534?

Affected products include Openclaw.

How do I fix CVE-2026-43534?

Upgrade affected software to a fixed version, for example Openclaw 2026.4.10 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-43534 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.