Auth bypass in Openclaw
CVE-2026-41406
OpenClaw before 2026.3.31 contains a sender allowlist bypass vulnerability that allows remote attackers to access restricted messages. Attackers can exploit fetched quoted, root, and thread context messages to bypass sender allowlist restrictions and retrieve unauthorized content.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (31.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.4% 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, 2026.3.31
Weakness classification (CWE)
References
- github.com/openclaw/openclaw/security/advisories/GHSA-877v-w3f5-3pcq (vendor-advisory, Vendor Advisory)
- github.com/openclaw/openclaw/commit/f45e5a6569aab1d58cc6de25b19f1dc4c8779b85 (Patch, patch)
- www.vulncheck.com/advisories/openclaw-sender-allowlist-bypass-via-thread-histor… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-41406?
- CVE-2026-41406 is a medium-severity vulnerability in Openclaw, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 5.4/10. Published 2026-04-28.
- How severe is CVE-2026-41406?
- Medium severity. CVSS v3 base score is 5.4 out of 10.