Search/CVE-2026-53839
● CVE — Medium

CVE-2026-53839

VendoropenclawProductopenclawDiscoveredJun 12, 2026UpdatedJul 23, 2026

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.

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CVSS v3.1
6.5 MEDIUM
EPSS
0.27%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
EPSS Trend
Sep 25, 2026 → Oct 26, 2026
▼ 0.20pp
0.46% → 0.27% over 2 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredLOW
User InteractionNONE
ScopeUNCHANGED
ConfidentialityHIGH
IntegrityNONE
AvailabilityNONE
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Connections
2 relationships
Timeline
disclosure → media coverage
Jun 12, 2026
Disclosure — published as a CVE record. · last revised by NVD Jul 23, 2026