What is CVE-2026-53811?

CVE-2026-53811 is a high-severity vulnerability in Openclaw, classified under Authentication Bypass by Spoofing. CVSS score: 8.8/10. Published 2026-06-11.

How severe is CVE-2026-53811?

High severity. CVSS v3 base score is 8.8 out of 10.

Vulnerability in Openclaw

CVE-2026-53811

OpenClaw before 2026.5.7 contains a privilege escalation vulnerability in the Matrix allowFrom feature that allows authenticated accounts to match policy entries through mutable display name metadata. Attackers with the ability to change display names can receive agent access intended for another Matrix identity, potentially gaining unauthorized permissions depending on operator configuration.

EPSS: 0.003 (23.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Openclaw — versions 2026.5.7, 0

Weakness classification (CWE)

CWE-290 — Authentication Bypass by Spoofing

References

disclosure@vulncheck.com (vendor-advisory, Mitigation, patch, Vendor Advisory)
disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2026-53811?: CVE-2026-53811 is a high-severity vulnerability in Openclaw, classified under Authentication Bypass by Spoofing. CVSS score: 8.8/10. Published 2026-06-11.
How severe is CVE-2026-53811?: High severity. CVSS v3 base score is 8.8 out of 10.