OpenClaw's incomplete host env sanitization blocklist allows supply-chain redirection via package-manager env overrides

Exploitation

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

CVSS 4.0

8.5 · CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N · score source

EPSS

• CVE-2026-41387: 0.24% estimated exploitation activity in the next 30 days; percentile 15.30 (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 Host exec env override sanitization did not fail closed for several package-manager and related redirect variables that can steer dependency fetches or startup behavior. Impact An approved exec request could silently redirect package resolution or runtime bootstrap to attacker-controlled infrastructure and execute trojanized content. Affected Component src/infra/host-env-security-policy.json, src/infra/host-env-security.ts Fixed Versions - Affected: < 2026.3.22 - Patched: = 2026.3.22 Fix Fixed by commit 7abfff756d (Exec: harden host env override handling across gateway and node).

Published by the source

31 Mar 2026, 23:59 UTC

Last modified by the source

6 May 2026, 02:51 UTC

Source last checked

26 Oct 2026, 12:51 UTC

1. Revision 3 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-j7p2-qcwm-94v4

2. Revision 2 · amended · 24 Oct 2026

   Reviewed OSV alias/range/CVSS4 correction; package source scopes and original publication preserved. No customer finding resolved.

3. Revision 1 · created · 24 Oct 2026

   Published from osv record GHSA-j7p2-qcwm-94v4

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# Patch Next advisory brief: CVE-2026-41387

Advisory: OpenClaw's incomplete host env sanitization blocklist allows supply-chain redirection via package-manager env overrides
IDs: CVE-2026-41387, GHSA-j7p2-qcwm-94v4
Record: https://patchnext.com/advisories/cve-2026-41387 (revision 3, source checked 26 Oct 2026, 12:51 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: openclaw 2026.3.22. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm openclaw: affected < 2026.3.22; fixed in 2026.3.22

## 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-j7p2-qcwm-94v4 (OSV record GHSA-j7p2-qcwm-94v4 lists affected ranges: npm openclaw >=0 <2026.3.22 (fixed))
- Verified: https://github.com/advisories/GHSA-j7p2-qcwm-94v4 (GitHub-reviewed advisory GHSA-j7p2-qcwm-94v4 lists affected ranges: npm openclaw >=0 <2026.3.22)

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