Critical severity · published May 5, 2026
CVE-2026-43534
OpenClaw < 2026.4.10 - Unsanitized External Input in Agent Hook Events
9.8
CVSS
0.2%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
OpenClaw · OpenClaw
before 2026.4.10 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-43534
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-43534
Patch
https://github.com/openclaw/openclaw/commit/e3a845bde5b54f4f1e742d0a51ba9860f9619b29
Vendor Advisory
https://github.com/openclaw/openclaw/security/advisories/GHSA-7g8c-cfr3-vqqr
Third Party Advisory
https://www.vulncheck.com/advisories/openclaw-unsanitized-external-input-in-agent-hook-events
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