Authenticated script execution via preflight parser bypass
Published Apr 2, 2026 · Updated Apr 2, 2026
Command validation bypass in OpenClaw 2026.4.1 and earlier allows remote authenticated users to execute blocked script content. validateScriptFileForShellBleed() fails open when its parser encounters piped execution, command substitution, subshell invocation, or other complex interpreter forms, so it skips content validation. The attacker must already control a command submitted to an OpenClaw execution surface; exploitation bypasses this defense-in-depth guard and runs script content that the policy would otherwise block.
Summary
What happened
Command validation bypass in OpenClaw 2026.4.1 and earlier allows remote authenticated users to execute blocked script content. validateScriptFileForShellBleed() fails open when its parser encounters piped execution, command substitution, subshell invocation, or other complex interpreter forms, so it skips content validation. The attacker must already control a command submitted to an OpenClaw execution surface; exploitation bypasses this defense-in-depth guard and runs script content that the policy would otherwise block.
The record
- CVE
- CVE-2026-34425
- Published
- Apr 2, 2026
- Updated
- Apr 2, 2026
- Vendor
- OpenClaw Foundation
- Product
- OpenClaw
- Classifications
- CWE-184, T1059
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 2, 2026CVE publishedPublication date reported by the CVE source.
- Apr 2, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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- Affected versionversion=0 <8aceaf5d0f0ec552b75a792f7f0a3bfa5b091513
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
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Technologies
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Your stack
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