What is CVE-2026-42435?

CVE-2026-42435 is a high-severity vulnerability in Openclaw, classified under Incomplete List of Disallowed Inputs. CVSS score: 8.8/10. Published 2026-05-05.

How severe is CVE-2026-42435?

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

Vulnerability in Openclaw

CVE-2026-42435

OpenClaw versions from 2026.2.22 before 2026.4.12 contain an insufficient shell-wrapper detection vulnerability allowing attackers to inject environment variable assignments at the argv level. Attackers can bypass exec preflight handling t…

EPSS: 0.001 (28.6th 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 2026.2.22, 2026.4.12

Weakness classification (CWE)

CWE-184 — Incomplete List of Disallowed Inputs

References

GitHub Security Advisory (GHSA-j6c7-3h5x-99g9) (vendor-advisory)
Patch Commit (patch)
VulnCheck Advisory: OpenClaw 2026.2.22 < 2026.4.12 - Shell-Wrapper Detection Bypass via Environment Variable Assignment Injection (third-party-advisory)

Frequently asked questions

What is CVE-2026-42435?: CVE-2026-42435 is a high-severity vulnerability in Openclaw, classified under Incomplete List of Disallowed Inputs. CVSS score: 8.8/10. Published 2026-05-05.
How severe is CVE-2026-42435?: High severity. CVSS v3 base score is 8.8 out of 10.