What is CVE-2026-42434?

CVE-2026-42434 is a high-severity vulnerability in Openclaw, classified under Incorrect Authorization. CVSS score: 8.8/10. Published 2026-05-05.

How severe is CVE-2026-42434?

High severity. CVSS v3 base score is 8.8 out of 10.

Auth bypass in Openclaw

CVE-2026-42434

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 inst…

Vulnerability class: Broken Access Control

EPSS: 0.001 (18.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Openclaw — versions 2026.4.5, 2026.4.10

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

GitHub Security Advisory (GHSA-736r-jwj6-4w23) (vendor-advisory)
Patch Commit (patch)
VulnCheck Advisory: OpenClaw 2026.4.5 < 2026.4.10 - Sandbox Escape via host Parameter Override in Exec Routing (third-party-advisory)

Frequently asked questions

What is CVE-2026-42434?: CVE-2026-42434 is a high-severity vulnerability in Openclaw, classified under Incorrect Authorization. CVSS score: 8.8/10. Published 2026-05-05.
How severe is CVE-2026-42434?: High severity. CVSS v3 base score is 8.8 out of 10.