CVE-2026-53839: OpenClaw before 2026.5.7 contains a hostname validation vulnerability in retry endpoint checks that allows matching...
MEDIUM
CVSS 6.5
1 PoC
Published: June 12, 2026 | Last Modified: June 12, 2026
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.
Ghostwire Analysis — What This Means Practically
- Medium CVSS score indicates moderate risk — exploitation requires specific conditions or results in limited impact.
- 1 proof-of-concept exploit available on GitHub. Public exploit code lowers the barrier for both researchers and attackers.
This analysis is generated by Ghostwire from NVD, CISA KEV, EPSS, and open-source intelligence data. Verify findings through primary sources before acting.
Proof-of-Concept Exploits (1)
Security Coverage (1 articles)
References