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Critical, CVSS 9.2amended

OpenClaw: Feishu webhook and card-action validation now fail closed

CVE-2026-44109GHSA-xh72-v6v9-mwhc

What to do

Vendor fix available. Upgrade each affected package to the fixed version on its release line (openclaw 2026.4.15), 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
    < 2026.4.15
    Fixed in
    2026.4.15

Sources

Severity and exploitation
Exploitation
No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.
CVSS 4.0
9.2 · CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N · score source
EPSS
  • CVE-2026-44109: 0.72% estimated exploitation activity in the next 30 days; percentile 53.91 (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.

Summary Feishu webhook mode accepted missing encryptKey configuration as valid and blank card-action callback tokens as usable lifecycle tokens. Together, those fail-open paths could allow unauthenticated webhook or card-action traffic to reach command dispatch in affected deployments. Impact A deployment using Feishu webhook mode without a configured encryptKey, or handling malformed card-action callbacks with blank callback tokens, could fail open instead of rejecting the request. Severity remains critical because affected webhook deployments expose a network-triggered path into OpenClaw command handling without the expected Feishu signature or replay protection. Affected versions - Affected: < 2026.4.15 - Patched: 2026.4.15 Fix OpenClaw 2026.4.15 makes Feishu webhook and card-action validation fail closed. Webhook mode now refuses to start without an encryptKey, missing signing configuration returns invalid instead of valid, invalid signatures return 401, and blank card-action…

Dates and revisions
Published by the source
Last modified by the source
Source last checked
  1. Revision 4 · amended ·

    Amended from ghsa record GHSA-xh72-v6v9-mwhc

  2. Revision 3 · amended ·

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

  3. Revision 2 · amended ·

    Amended from osv record GHSA-xh72-v6v9-mwhc

  4. Revision 1 · created ·

    Published from ghsa record GHSA-xh72-v6v9-mwhc

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-2026-44109

Advisory: OpenClaw: Feishu webhook and card-action validation now fail closed
IDs: CVE-2026-44109, GHSA-xh72-v6v9-mwhc
Record: https://patchnext.com/advisories/cve-2026-44109 (revision 4, 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: Critical (CVSS 9.2)
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 < 2026.4.15; 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://github.com/advisories/GHSA-xh72-v6v9-mwhc (GitHub-reviewed advisory GHSA-xh72-v6v9-mwhc lists affected ranges: npm openclaw >=0 <2026.4.15)
- Verified: https://osv.dev/vulnerability/GHSA-xh72-v6v9-mwhc (OSV record GHSA-xh72-v6v9-mwhc lists affected ranges: npm openclaw >=0 <2026.4.15 (fixed))

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