CVE-2026-100555

High

Description

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.

SeverityHigh
CVSS7.1
Exploit probability—
ProductOpenClaw
PublishedSep 26, 2026
First seenSep 26, 2026

How to fix

Update
  • OpenClaw OpenClaw2026.8.1 or later

Affected products

ProductAffected versionsFixed in
OpenClaw OpenClaw2026.7.1 ≤ v < 2026.8.12026.8.1

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CVE-2026-100555 · OpenClaw · Dark Radar