Resource exhaustion in Openclaw
CVE-2026-41400
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
EPSS exploit prediction
EPSS: 0.008 (53.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 53.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.008 · change: +0.002
Affected products
- Openclaw — versions 0, 2026.3.31
Weakness classification (CWE)
References
- github.com/openclaw/openclaw/security/advisories/GHSA-2w79-r9g8-wmcr (vendor-advisory, Vendor Advisory)
- github.com/openclaw/openclaw/commit/9abcfdadf591bf266d85fbdfe14ae833e557a110 (Patch, patch)
- www.vulncheck.com/advisories/openclaw-resource-consumption-via-oversized-websoc… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-41400?
- CVE-2026-41400 is a medium-severity vulnerability in Openclaw, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.3/10. Published 2026-04-28.
- How severe is CVE-2026-41400?
- Medium severity. CVSS v3 base score is 5.3 out of 10.