Auth bypass in Openclaw
CVE-2026-41298
OpenClaw before 2026.4.2 fails to enforce write scopes on the POST /sessions/:sessionKey/kill endpoint in identity-bearing HTTP modes. Read-scoped callers can terminate running subagent sessions by sending requests to this endpoint, bypassing authorization controls.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (21.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 21.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Openclaw — versions 0, 2026.4.2
Weakness classification (CWE)
References
- github.com/openclaw/openclaw/security/advisories/GHSA-5hff-46vh-rxmw (vendor-advisory, Vendor Advisory)
- github.com/openclaw/openclaw/commit/54a0878517167c6e49900498cf77420dadb74beb (Patch, patch)
- www.vulncheck.com/advisories/openclaw-authorization-bypass-in-session-terminati… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-41298?
- CVE-2026-41298 is a medium-severity vulnerability in Openclaw, classified under Missing Authorization. CVSS score: 5.4/10. Published 2026-04-21.
- How severe is CVE-2026-41298?
- Medium severity. CVSS v3 base score is 5.4 out of 10.