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.

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 b…

EPSS: 0.000 (4.4th percentile) — read the EPSS interpretation.

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.

Affected products

Openclaw — versions 0, 2026.3.31

Weakness classification (CWE)

CWE-346 — Origin Validation Error

References

GitHub Security Advisory (GHSA-rg8m-3943-vm6q) (vendor-advisory, Vendor Advisory)
Patch Commit (Patch, patch)
VulnCheck Advisory: OpenClaw < 2026.3.31 - Matrix Thread Context Allowlist Bypass via Sender Validation (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.