OpenClaw before 2026.8.2 contains a denial of service vulnerability in the Browser extension relay that allows unauthenticated network sources to… (CVE-2026-100527)
OpenClaw versions before 2026.8.2 have a denial of service vulnerability in the Browser extension relay. This flaw allows unauthenticated network sources to exhaust the pending-authentication capacity by holding every pending slot open with silent WebSocket upgrades. As a result, paired extensions cannot complete Browser Relay Authentication v2, causing a denial of service condition.
AI Analysis
Technical Summary
The vulnerability in OpenClaw prior to version 2026.8.2 involves the Browser extension relay component. Unauthenticated network sources can exploit this by maintaining silent WebSocket upgrade connections, which exhausts the pending-authentication slots. This prevents legitimate paired extensions from completing the Browser Relay Authentication v2 process, leading to denial of service.
Potential Impact
An attacker can cause a denial of service by exhausting the pending-authentication capacity of the Browser extension relay. This prevents legitimate extensions from completing authentication, disrupting normal operation. There is no impact on confidentiality or integrity, only availability is affected.
Mitigation Recommendations
A fix is available in OpenClaw version 2026.8.2. Users should upgrade to this version or later to remediate the vulnerability.
OpenClaw before 2026.8.2 contains a denial of service vulnerability in the Browser extension relay that allows unauthenticated network sources to… (CVE-2026-100527)
Description
OpenClaw versions before 2026.8.2 have a denial of service vulnerability in the Browser extension relay. This flaw allows unauthenticated network sources to exhaust the pending-authentication capacity by holding every pending slot open with silent WebSocket upgrades. As a result, paired extensions cannot complete Browser Relay Authentication v2, causing a denial of service condition.
CVSS v3.1
Score 5.3medium
Affected software
pkg:github/openclaw/openclawRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in OpenClaw prior to version 2026.8.2 involves the Browser extension relay component. Unauthenticated network sources can exploit this by maintaining silent WebSocket upgrade connections, which exhausts the pending-authentication slots. This prevents legitimate paired extensions from completing the Browser Relay Authentication v2 process, leading to denial of service.
Potential Impact
An attacker can cause a denial of service by exhausting the pending-authentication capacity of the Browser extension relay. This prevents legitimate extensions from completing authentication, disrupting normal operation. There is no impact on confidentiality or integrity, only availability is affected.
Mitigation Recommendations
A fix is available in OpenClaw version 2026.8.2. Users should upgrade to this version or later to remediate the vulnerability.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-2rm8-9g74-xwqp
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-100527"]
- Database Specific Severity
- MODERATE
- Cvss Version
- 3.1
Threat ID: 6ab74f31f7a7c54106e13869
Added to database: 09/26/2026, 04:50:57 UTC
Last enriched: 09/26/2026, 04:57:41 UTC
Last updated: 09/27/2026, 01:47:40 UTC
Views: 16
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