What is CVE-2026-53857?

CVE-2026-53857 is a high-severity vulnerability in Openclaw, classified under Authentication Bypass by Spoofing. CVSS score: 8.1/10. Published 2026-06-16.

How severe is CVE-2026-53857?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Openclaw

CVE-2026-53857

OpenClaw before 2026.5.3 contains a policy enforcement vulnerability where Zalo contacts with mutable display metadata could match allowFrom policy entries through display name changes. Attackers with mutable display names could receive ag…

EPSS: 0.002 (13.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

Affected products

Openclaw — versions 0, 2026.5.3

Weakness classification (CWE)

CWE-290 — Authentication Bypass by Spoofing

References

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

Frequently asked questions

What is CVE-2026-53857?: CVE-2026-53857 is a high-severity vulnerability in Openclaw, classified under Authentication Bypass by Spoofing. CVSS score: 8.1/10. Published 2026-06-16.
How severe is CVE-2026-53857?: High severity. CVSS v3 base score is 8.1 out of 10.