Medium severity6.5NVD Advisory· Published Jun 12, 2026· Updated Jun 16, 2026

CVE-2026-53839

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

OpenClaw/Openclawinferred3 versions
<2026.5.7+ 2 more
- (no CPE)range: <2026.5.7
- cpe:2.3:a:openclaw:openclaw:*:*:*:*:*:node.js:*:*range: <2026.5.7
- (no CPE)range: <2026.5.7

Patches

Vulnerability mechanics

References

github.com/openclaw/openclaw/security/advisories/GHSA-77q5-rr5v-x43qnvdMitigationVendor Advisory
www.vulncheck.com/advisories/openclaw-hostname-prefix-matching-bypass-in-trusted-retry-endpoint-validationnvdThird Party Advisory

News mentions

OpenClaw: 25 CVEs Disclosed in Largest Security Batch, Including Code Execution and Critical Auth Bypass
Vypr Intelligence · Jun 12, 2026

cvss	0.423
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000