CVE-2026-41399
HIGHOpenClaw < 2026.3.28 - Denial of Service via Unbounded Pre-auth WebSocket Upgrades
Title source: cnaDescription
OpenClaw before 2026.3.28 accepts unbounded concurrent unauthenticated WebSocket upgrades without pre-authentication budget allocation. Unauthenticated network attackers can exhaust socket and worker capacity to disrupt WebSocket availability for legitimate clients.
References (2)
Core 2
Core References
Vendor Advisory vendor-advisory
GitHub Security Advisory (GHSA-f44p-c7w9-7xr7)
https://github.com/openclaw/openclaw/security/advisories/GHSA-f44p-c7w9-7xr7
Third Party Advisory third-party-advisory
VulnCheck Advisory: OpenClaw < 2026.3.28 - Denial of Service via Unbounded Pre-auth WebSocket Upgrades
https://www.vulncheck.com/advisories/openclaw-denial-of-service-via-unbounded-pre-auth-websocket-upgrades
Scores
CVSS v3
7.5
EPSS
0.0032
EPSS Percentile
23.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-770
Status
published
Products (4)
npm/openclaw
0 - 2026.3.28npm
OpenClaw/OpenClaw
< 2026.3.28
openclaw/openclaw
< 2026.3.28
OpenClaw/OpenClaw
2026.3.28
Published
Apr 28, 2026
Tracked Since
Apr 29, 2026