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CVE-2026-53839

MEDIUM
6.5
CVSS Severity Score
EPSS Score0.0140%
EPSS Percentile40.52th
PublishedJun 12, 2026
Last ModifiedJun 12, 2026

Vulnerability Description

OpenClaw before 2026.5.7 contains a hostname validation vulnerability in retry endpoint checks that allows matching hostname prefixes instead of exact hostnames. Attackers can exploit this by crafting a hostname prefix resembling a trusted host to send authentication material to untrusted endpoints.

Affected Platforms (CPE)

No CPE configurations currently published for this record.

References & Advisories

🔗 https://github.com/openclaw/openclaw/security/advisories/GHSA-77q5-rr5v-x43q
🔗 https://www.vulncheck.com/advisories/openclaw-hostname-prefix-matching-bypass-in-trusted-retry-endpoint-validation

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