Vulnerability in Openclaw
CVE-2026-34503
OpenClaw before 2026.3.28 fails to disconnect active WebSocket sessions when devices are removed or tokens are revoked. Attackers with revoked credentials can maintain unauthorized access through existing live sessions until forced reconnection.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.005 (36.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 37th percentile — 36.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.001
Affected products
- Openclaw — versions 0, 2026.3.28
Weakness classification (CWE)
References
- GitHub Security Advisory (GHSA-2pr2-hcv6-7gwv) (vendor-advisory, third-party-advisory, Vendor Advisory)
- Patch Commit (Patch, patch)
- VulnCheck Advisory: OpenClaw < 2026.3.28 - Incomplete WebSocket Session Termination on Device Removal and Token Revocation (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-34503?
- CVE-2026-34503 is a high-severity vulnerability in Openclaw, classified under Insufficient Session Expiration. CVSS score: 8.1/10. Published 2026-03-31.
- How severe is CVE-2026-34503?
- High severity. CVSS v3 base score is 8.1 out of 10.