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.
Published: 2026-09-26
Score: 6.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Mon, 05 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Sat, 26 Sep 2026 02:30:00 +0000

Type Values Removed Values Added
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.
Title OpenClaw before 2026.8.2 Denial of Service via Browser Relay
First Time appeared Openclaw
Openclaw openclaw
Weaknesses CWE-400
CPEs cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:*:*:*
Vendors & Products Openclaw
Openclaw openclaw
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}


Subscriptions

Openclaw Openclaw
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-05T14:55:04.758Z

Reserved: 2026-09-26T01:00:40.148Z

Link: CVE-2026-100527

cve-icon Vulnrichment

Updated: 2026-10-05T14:51:01.459Z

cve-icon NVD

Status : Deferred

Published: 2026-09-26T03:16:57.910

Modified: 2026-10-05T15:17:10.277

Link: CVE-2026-100527

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-26T09:00:13Z

Weaknesses