OpenClaw: Webchat media embedding enforces local-root containment for tool-result files

Exploitation

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

CVSS 4.0

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

EPSS

• CVE-2026-41389: 0.26% estimated exploitation activity in the next 30 days; percentile 18.27 (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 Webchat tool-result media normalization could pass local and UNC-style file paths into the host-side media embedding path without applying the configured local-root containment policy. Impact A crafted tool-result media reference could cause the host to attempt local file reads or Windows UNC/network path access while preparing webchat media blocks. This could disclose allowed host files or trigger network credential exposure on affected Windows deployments. Severity remains medium because exploitation depends on a tool-result media path reaching the webchat embedding path, but the sink is a host-side file read before the user sees the rendered result. Affected versions - Affected: = 2026.4.7, < 2026.4.15 - Patched: 2026.4.15 Fix OpenClaw 2026.4.15 hardens the webchat media path and the shared media resolver. Remote-host file:// URLs and Windows network paths are rejected before filesystem access, and audio embedding now enforces configured localRoots containment before stat…

Published by the source

17 Apr 2026, 22:33 UTC

Last modified by the source

8 May 2026, 01:41 UTC

Source last checked

26 Oct 2026, 12:51 UTC

1. Revision 3 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-mr34-9552-qr95

2. Revision 2 · amended · 25 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-mr34-9552-qr95

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# Patch Next advisory brief: CVE-2026-41389

Advisory: OpenClaw: Webchat media embedding enforces local-root containment for tool-result files
IDs: CVE-2026-41389, GHSA-mr34-9552-qr95
Record: https://patchnext.com/advisories/cve-2026-41389 (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: Medium (CVSS 6.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: openclaw 2026.4.15. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm openclaw: affected >= 2026.4.7, < 2026.4.15; fixed in 2026.4.15

## 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-mr34-9552-qr95 (OSV record GHSA-mr34-9552-qr95 lists affected ranges: npm openclaw >=2026.4.7 <2026.4.15 (fixed))
- Verified: https://github.com/advisories/GHSA-mr34-9552-qr95 (GitHub-reviewed advisory GHSA-mr34-9552-qr95 lists affected ranges: npm openclaw >=2026.4.7 <2026.4.15)

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