PT-2026-49776 · Openclaw · Openclaw

Chinmohan Nayak · Published 2026-06-16 · Updated 2026-06-16 · CVE-2026-53859

NVD

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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.

Fix

SSRF

Weakness Enumeration

CWE-918

CWE-1023

Related Identifiers

CVE-2026-53859

Affected Products

Openclaw

References · 3

• https://github.com/openclaw/openclaw/security/advisories/GHSA-gxg4-2rrr-jhc7 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-53859 · Security Note
• https://vulncheck.com/advisories/openclaw-hostname-validation-bypass-via-trailing-dot-inconsistency · Note