CVE-2026-34425
mediumpriority · track · 17EPSS 0.003 · 23 %ileDEEUUSEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–medium · 1.3–5.4
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (5)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-0980OpenClaw: Mehrere SchwachstellenDeutsch2026-04-06csaf · cert_bundDE
Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in OpenClaw ausnutzen, um Daten zu manipulieren, Sicherheitsmechanismen zu umgehen oder einen Denial-of-Service-Zustand zu erzeugen..
- GHSA-fvx6-pj3r-5q4qOpenClaw's complex interpreter pipelines could skip exec script preflight validation2026-04-06ghsa · osvUS
## Summary Before OpenClaw 2026.4.2, exec script preflight validation could fail open on complex interpreter invocations such as pipes or other non-simple command forms. In those cases, script-content validation could be skipped entirely. ## Impact An attacker-controlled command shape could bypass the intended preflight validation for script execution. This weakened a defense-in-depth guard that was meant to block unsafe script content before execution. ## Affected Packages / Versions - Package: `openclaw` (npm) - Affected versions: `<= 2026.4.1` - Patched versions: `>= 2026.4.2` - Latest published npm version: `2026.4.1` ## Fix Commit(s) - `8aceaf5d0f0ec552b75a792f7f0a3bfa5b091513` — close the fail-open bypass in exec script preflight ## Release Process Note The fix is present on `main` and is staged for OpenClaw `2026.4.2`. Publish this advisory after the `2026.4.2` npm release is live. Thanks @iskindar for reporting, and thanks @wsparks-vc for coordination.
also known as (4)
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sources
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references (10)
External citations — patches, advisories, analysis.
- https://github.com/openclaw/openclaw/commit/8aceaf5d0f0ec552b75a792f7f0a3bfa5b091513cnnvd
- https://github.com/openclaw/openclaw/releasesPatchcnnvd
- https://github.com/openclaw/openclaw/security/advisories/GHSA-fvx6-pj3r-5q4qcnnvd
- https://www.vulncheck.com/advisories/openclaw-shell-bleed-protection-preflight-validation-bypasscnnvd
- https://github.com/openclaw/openclaw/commit/8aceaf5d0f0ec552b75a792f7f0a3bfa5b091513enisa_euvd
- https://github.com/openclaw/openclaw/security/advisories/GHSA-fvx6-pj3r-5q4qenisa_euvd
- https://www.vulncheck.com/advisories/openclaw-shell-bleed-protection-preflight-validation-bypassenisa_euvd
- https://github.com/openclaw/openclaw/commit/8aceaf5d0f0ec552b75a792f7f0a3bfa5b091513Patchnvd
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