CVE-2026-53859: OpenClaw < 2026.5.26 - Hostname Validation Bypass via Trailing-Dot Inconsistency
Fixed in 2026.5.26 · Affected: OpenClaw before 2026.5.26 · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 11% of scored CVEs
DescriptionCVE.org
OpenClaw before 2026.5.26 contains a hostname validation vulnerability allowing attackers to bypass blocklist comparisons using trailing-dot notation in model or workspace-derived URLs. Attackers can exploit inconsistent hostname checks to reach destinations that operators intended to block through hostname policies.
Affected products1
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- OpenClaw · OpenClawbefore 2026.5.26
On the Atlas
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CoverageNo articles yet
No CyberSIXT article names CVE-2026-53859 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.