CVE-2026-53839
CVE-2026-53839
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…
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-53839?
- CVE-2026-53839 is a medium-severity vulnerability, classified under CWE-1023. CVSS score: 6.5/10. Published 2026-06-12.
- How severe is CVE-2026-53839?
- Medium severity. CVSS v3 base score is 6.5 out of 10.