OpenClaw's complex interpreter pipelines could skip exec script preflight validation

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS

not scored

EPSS

• CVE-2026-34425: 0.32% estimated exploitation activity in the next 30 days; percentile 24.49 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

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.

Published by the source

6 Apr 2026, 22:53 UTC

Last modified by the source

6 Apr 2026, 23:12 UTC

Source last checked

26 Oct 2026, 12:47 UTC

1. Revision 2 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-fvx6-pj3r-5q4q

2. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-fvx6-pj3r-5q4q

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# Patch Next advisory brief: CVE-2026-34425

Advisory: OpenClaw's complex interpreter pipelines could skip exec script preflight validation
IDs: CVE-2026-34425, GHSA-fvx6-pj3r-5q4q
Record: https://patchnext.com/advisories/cve-2026-34425 (revision 2, source checked 26 Oct 2026, 12:47 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Unrated
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: openclaw 2026.4.2. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm openclaw: affected <= 2026.4.1; fixed in 2026.4.2

## Suggested inspection (read-only)
- `npm ls openclaw --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on openclaw.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://osv.dev/vulnerability/GHSA-fvx6-pj3r-5q4q (OSV record GHSA-fvx6-pj3r-5q4q lists affected ranges: npm openclaw >=0 <2026.4.2 (fixed))
- Verified: https://github.com/advisories/GHSA-fvx6-pj3r-5q4q (GitHub-reviewed advisory GHSA-fvx6-pj3r-5q4q lists affected ranges: npm openclaw >=0 <=2026.4.1)

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