---
title: "CVE-2026-44109: OpenClaw: Feishu webhook and card-action validation now fail closed"
url: https://erroneo.us/security/cve/CVE-2026-44109/
description: "CVE-2026-44109 (openclaw (npm)): OpenClaw before 2026.4.15 contains an authentication bypass vulnerability in Feishu webhook and card-action validation that…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-05-06
date_modified: 2026-05-12
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-44109"
kev: false
cvss: 9.2
epss: 0.01089
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-44109: OpenClaw: Feishu webhook and card-action validation now fail closed

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog and CISA’s SSVC assessment records no known exploitation. That can change quickly after a public write-up; re-check if you are affected.
- EPSS 1.1% , percentile 65: FIRST’s model estimates a 1.1% chance of exploitation activity in the next 30 days, higher than 65% of all scored CVEs (moderate). EPSS is a probability, not a verdict.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes openclaw (npm) < 2026.4.15, fixed in 2026.4.15 . Check your lockfile, including transitive dependencies.

## What it is

OpenClaw before 2026.4.15 contains an authentication bypass vulnerability in Feishu webhook and card-action validation that allows unauthenticated requests to reach command dispatch. Missing encryptKey configuration and blank callback tokens fail open instead of rejecting requests, enabling attackers to bypass signature verification and replay protection to execute arbitrary commands.

## Affected packages

- npm `openclaw` < 2026.4.15 → fixed: 2026.4.15

## Affected products (CVE record)

- OpenClaw OpenClaw: < 2026.4.15

## Severity

- VulnCheck 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`
- VulnCheck CVSS 3.1: 9.8 `CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
- GitHub 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`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation none , automatable yes , technical impact total .
- FIRST EPSS (model of 2026-10-21): 1.09% probability of exploitation activity in the next 30 days; percentile 65.

## Sources

- [GitHub Security Advisory (GHSA-xh72-v6v9-mwhc)](https://github.com/openclaw/openclaw/security/advisories/GHSA-xh72-v6v9-mwhc)
- [Patch Commit](https://github.com/openclaw/openclaw/commit/c8003f1b33ed2924be5f62131bd28742c5a41aae)
- [GitHub Advisory GHSA-xh72-v6v9-mwhc](https://github.com/advisories/GHSA-xh72-v6v9-mwhc)
- [CVE.org record CVE-2026-44109](https://www.cve.org/CVERecord?id=CVE-2026-44109)
- [NVD entry CVE-2026-44109](https://nvd.nist.gov/vuln/detail/CVE-2026-44109)
- [VulnCheck Advisory: OpenClaw < 2026.4.15 - Authentication Bypass in Feishu Webhook and Card-Action Validation](https://www.vulncheck.com/advisories/openclaw-authentication-bypass-in-feishu-webhook-and-card-action-validation)
- [github.com](https://github.com/openclaw/openclaw/pull/66707)

---
Source page: https://erroneo.us/security/cve/CVE-2026-44109/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt