---
id: CVE-2026-100555
title: OpenClaw is an npm-distributed gateway application
summary: >-
  OpenClaw is an npm-distributed gateway application. In versions >= 2026.7.1
  and < 2026.8.1, Synology Chat attachment delivery could lose DNS pinning: the
  Gateway validated a single DNS result for a supplied file URL but then passed
  the o…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N'
cwe:
  - CWE-918
vendor: OpenClaw
product: OpenClaw
affected:
  - OpenClaw >= 2026.7.1 < 2026.8.1
published: '2026-09-26'
updated: '2026-09-26'
sourceUpdated: '2026-09-26T03:17:02.087'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-100555'
references:
  - url: >-
      https://github.com/openclaw/openclaw/security/advisories/GHSA-cf95-m4jv-59rc
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/openclaw-before-2026.8.1-dns-rebinding-via-attachment-delivery
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-26T03:25:24.683Z'
---

## Overview

OpenClaw is an npm-distributed gateway application. In versions >= 2026.7.1 and < 2026.8.1, Synology Chat attachment delivery could lose DNS pinning: the Gateway validated a single DNS result for a supplied file URL but then passed the original hostname to the Synology NAS, where it could resolve to a different destination. When attachment delivery accepted a remotely influenced hostname, an attacker could use DNS rebinding to make the NAS fetch a private or otherwise policy-denied resource and return its contents to the addressed conversation (server-side request forgery). Practical impact depends on NAS routing, resolver behavior, and the response available at the private destination. The issue is fixed in 2026.8.1; as a workaround, disable remote URL attachment forwarding in Synology Chat.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.