Auth bypass in Openclaw
CVE-2026-41344
OpenClaw before 2026.3.28 contains a privilege escalation vulnerability in the chat.send endpoint that allows write-scoped gateway callers to persist admin-only verboseLevel session overrides. Attackers can exploit the /verbose parameter to bypass access controls and expose sensitive reasoning or tool output intended to be restricted to administrators.
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: 0.004 (30.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.0% 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: 0.004 · change: +0.002
Affected products
- Openclaw — versions 0, 2026.3.28
Weakness classification (CWE)
References
- github.com/openclaw/openclaw/security/advisories/GHSA-5h2w-qmfp-ggp6 (vendor-advisory, Vendor Advisory)
- www.vulncheck.com/advisories/openclaw-privilege-escalation-via-chat-send-verbos… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-41344?
- CVE-2026-41344 is a medium-severity vulnerability in Openclaw, classified under Incorrect Authorization. CVSS score: 5.4/10. Published 2026-04-23.
- How severe is CVE-2026-41344?
- Medium severity. CVSS v3 base score is 5.4 out of 10.