Vulnerability in Openclaw
CVE-2026-41376
OpenClaw before 2026.3.31 contains an allowlist bypass vulnerability in Matrix thread root and reply context handling that fails to properly validate message senders. Attackers can fetch thread-root and reply context messages that should be filtered by sender allowlists, bypassing access controls.
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: 0.003 (15.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 16th percentile — 15.7% 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, 2026.3.31
Weakness classification (CWE)
References
- github.com/openclaw/openclaw/security/advisories/GHSA-rg8m-3943-vm6q (vendor-advisory, Vendor Advisory)
- github.com/openclaw/openclaw/commit/8a563d603b70ef6338915f0527bee87282c3bad5 (Patch, patch)
- www.vulncheck.com/advisories/openclaw-matrix-thread-context-allowlist-bypass-vi… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-41376?
- CVE-2026-41376 is a medium-severity vulnerability in Openclaw, classified under Origin Validation Error. CVSS score: 5.4/10. Published 2026-04-28.
- How severe is CVE-2026-41376?
- Medium severity. CVSS v3 base score is 5.4 out of 10.