CVE-2026-53839: OpenClaw < 2026.5.7 - Hostname Prefix Matching Bypass in Trusted Retry Endpoint Validation
Fixed in 2026.5.7 · Affected: OpenClaw before 2026.5.7 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 18% of scored CVEs
DescriptionCVE.org
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.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- OpenClaw · OpenClawbefore 2026.5.7
On the Atlas
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CoverageNo articles yet
No CyberSIXT article names CVE-2026-53839 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.