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High, CVSS 8.7amended

OpenClaw: Message action attachment hydration bypasses local media root checks when sandboxRoot is unset

CVE-2026-27522GHSA-fqcm-97m6-w7rm

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (openclaw 2026.2.24), redeploy, then verify what is actually installed.

This page has no inventory attached, so it cannot say whether you are affected. A vendor fix is not proof that your deployment is fixed.

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Affected packages

  • npm openclaw

    Affected
    <= 2026.2.23
    Fixed in
    2026.2.24

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS 4.0
8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N · score source
EPSS
  • CVE-2026-27522: 0.39% estimated exploitation activity in the next 30 days; percentile 32.81 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.
Source description

As published by the source; long descriptions are shortened.

Impact sendAttachment and setGroupIcon message actions could hydrate media from local absolute paths when sandboxRoot was unset, bypassing intended local media root checks. This could allow reads of arbitrary host files reachable by the runtime user when an authorized message-action path was triggered. Affected Packages / Versions - Package: openclaw (npm) - Latest published npm version at triage: 2026.2.23 - Vulnerable: <= 2026.2.23 - Patched in code: = 2026.2.24 (planned next release) Remediation Upgrade to openclaw 2026.2.24 or later once published. Fix Commit(s) - 270ab03e379f9653e15f7033c9830399b66b7e51 Release Process Note patchedversions is pre-set to the planned next release (= 2026.2.24). Once that npm release is published, this advisory can be published without further field edits. OpenClaw thanks @GCXWLP for reporting. Publication Update (2026-02-25) openclaw@2026.2.24 is published on npm and contains the fix commit(s) listed above. This advisory now marks = 2026.2.24 as…

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 3 · amended ·

    Amended from ghsa record GHSA-fqcm-97m6-w7rm

  2. Revision 2 · amended ·

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

  3. Revision 1 · created ·

    Published from osv record GHSA-fqcm-97m6-w7rm

Agent brief

Preview the exact text before you copy it. Commands are read-only suggestions; review them before running anything.

# Patch Next advisory brief: CVE-2026-27522

Advisory: OpenClaw: Message action attachment hydration bypasses local media root checks when sandboxRoot is unset
IDs: CVE-2026-27522, GHSA-fqcm-97m6-w7rm
Record: https://patchnext.com/advisories/cve-2026-27522 (revision 3, source checked 26 Oct 2026, 12:46 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.7)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: openclaw 2026.2.24. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm openclaw: affected <= 2026.2.23; fixed in 2026.2.24

## 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-fqcm-97m6-w7rm (OSV record GHSA-fqcm-97m6-w7rm lists affected ranges: npm openclaw >=0 <2026.2.24 (fixed))
- Verified: https://github.com/advisories/GHSA-fqcm-97m6-w7rm (GitHub-reviewed advisory GHSA-fqcm-97m6-w7rm lists affected ranges: npm openclaw >=0 <=2026.2.23)

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