CVE-2026-53839
MEDIUMOpenClaw < 2026.5.7 - Hostname Prefix Matching Bypass in Trusted Retry Endpoint Validation
Title source: cnaDescription
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.
References (2)
Core 2
Core References
Vendor Advisory vendor-advisory
GitHub Security Advisory (GHSA-77q5-rr5v-x43q)
https://github.com/openclaw/openclaw/security/advisories/GHSA-77q5-rr5v-x43q
Third Party Advisory third-party-advisory
VulnCheck Advisory: OpenClaw < 2026.5.7 - Hostname Prefix Matching Bypass in Trusted Retry Endpoint Validation
https://www.vulncheck.com/advisories/openclaw-hostname-prefix-matching-bypass-in-trusted-retry-endpoint-validation
Scores
CVSS v3
6.5
EPSS
0.0027
EPSS Percentile
17.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-1023
Status
published
Products (3)
OpenClaw/OpenClaw
< 2026.5.7
openclaw/openclaw
< 2026.5.7
OpenClaw/OpenClaw
2026.5.7
Published
Jun 12, 2026
Tracked Since
Jun 13, 2026