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

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-05 · updated 2026-06-17
Weakness: CWE-863

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.

Affected products

OpenClaw: from 2026.4.5 before 2026.4.10 — fixed in 2026.4.10

How to fix

Upgrade to a fixed version: OpenClaw 2026.4.10. Check the vendor advisory for mitigations.

References

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

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