Vulnerability · Published May 5, 2026 · Assigned by VulnCheck
CVE-2026-43534OpenClaw < 2026.4.10 - Unsanitized External Input in Agent Hook Events
Critical 9.1
In plain English
A critical-severity insufficient verification of data authenticity in OpenClaw from OpenClaw. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)9.1Critical
Exploit odds (30 days)0.2%top 91.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | openclaw | 2026.4.10 | GHSA-7g8c-cfr3-vqqr |
Affected products (as reported)
Weakness: CWE-345 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
References
- GitHub Security Advisory (GHSA-7g8c-cfr3-vqqr) vendor-advisory
- Patch Commit patch
- VulnCheck Advisory: OpenClaw < 2026.4.10 - Unsanitized External Input in Agent Hook Events third-party-advisory