CVE-2026-100527

MEDIUMCVSS 5.3

Description

OpenClaw before 2026.8.2 contains a denial of service vulnerability in the Browser extension relay that allows unauthenticated network sources to exhaust pending-authentication capacity. Attackers can hold every pending slot by maintaining silent WebSocket upgrades, preventing paired extensions from completing Browser Relay Authentication v2.

Timeline

Published:September 26th, 2026 3:16 AM

Last modified:October 5th, 2026 3:17 PM

CVSS Scoring

CVSS v3: 5.3 (MEDIUM)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Weaknesses (CWE)

CWE-400

References & Reports

Advisories, patches, and third-party reports

https://github.com/openclaw/openclaw/security/advisories/GHSA-m78m-7h3q-q938
https://www.vulncheck.com/advisories/openclaw-before-2026.8.2-denial-of-service-via-browser-relay

Source: NIST NVD · Data may lag official sources by up to one minute