Input Validation Flaw in OpenClaw Affects Agent Hook Events
CVE-2026-43534

9.3CRITICAL

Key Information:

Vendor

Openclaw

Status
Openclaw
Vendor
CVE Published:
5 May 2026

What is CVE-2026-43534?

The OpenClaw platform, prior to version 2026.4.10, is susceptible to an input validation issue which allows attackers to enqueue external hook metadata as trusted system events. This vulnerability exposes the system to the risk of allowing untrusted input to be escalated into a higher-trust context, thereby potentially compromising the integrity of the application. It is imperative for users to update their installations to the latest version to mitigate this risk.

Affected Version(s)

OpenClaw 0 < 2026.4.10

OpenClaw 2026.4.10

References

https://github.com/openclaw/openclaw/security/advisories/...
vendor-advisory
https://github.com/openclaw/openclaw/commit/e3a845bde5b54...
patch
https://www.vulncheck.com/advisories/openclaw-unsanitized...
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

zsx (@zsxsoft)
qclawer
KeenSecurityLab
.