Vulnerability · Published Apr 28, 2026 · Assigned by VulnCheck
CVE-2026-41400OpenClaw < 2026.3.31 - Resource Consumption via Oversized WebSocket Frames in voice-call
Medium 5.3
In plain English
A medium-severity resource allocation without limits in OpenClaw from OpenClaw. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.5%top 55.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
OpenClaw before 2026.3.31 contains an incomplete fix for CVE-2026-32062 where the voice-call component parses large WebSocket frames before start validation. Remote attackers can send oversized pre-start WebSocket frames to cause resource consumption and denial of service.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | openclaw | 2026.3.31 | GHSA-2w79-r9g8-wmcr |
Affected products (as reported)
Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
References
- GitHub Security Advisory (GHSA-2w79-r9g8-wmcr) vendor-advisory
- Patch Commit patch
- VulnCheck Advisory: OpenClaw < 2026.3.31 - Resource Consumption via Oversized WebSocket Frames in voice-call third-party-advisory