Vulnerability · Published Apr 2, 2026 · Assigned by VulnCheck

CVE-2026-34425OpenClaw - Shell-Bleed Protection Preflight Validation Bypass

Medium 5.4

In plain English

A medium-severity security flaw in OpenClaw from OpenClaw. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.4Medium

Exploit odds (30 days)0.3%top 75.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

OpenClaw versions prior to commit 8aceaf5 contain a preflight validation bypass vulnerability in shell-bleed protection that allows attackers to execute blocked script content by using piped or complex command forms that the parser fails to recognize. Attackers can craft commands such as piped execution, command substitution, or subshell invocation to bypass the validateScriptFileForShellBleed() validation checks and execute arbitrary script content that would otherwise be blocked.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	openclaw	2026.4.2	GHSA-fvx6-pj3r-5q4q

Affected products (as reported)

Vendor	Product	Versions
OpenClaw	OpenClaw	0 – before 8aceaf5d0f0ec552b75a792f7f0a3bfa5b091513

Weakness: CWE-184 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

References

GitHub Security Advisory (GHSA-h3x4-hc5v-v2gm) vendor-advisory
Patch Commit #1 patch
https://www.vulncheck.com/advisories/openclaw-shell-bleed-protection-preflight-validation-bypass third-party-advisory