PT-2026-49043 · Openclaw · Openclaw

Ccy41928-Del · Published 2026-06-12 · Updated 2026-06-12 · CVE-2026-53839

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 2026.5.7 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.

Fix

Weakness Enumeration

CWE-1023

Related Identifiers

CVE-2026-53839

Affected Products

Openclaw

References · 3

• https://github.com/openclaw/openclaw/security/advisories/GHSA-77q5-rr5v-x43q · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-53839 · Security Note
• https://vulncheck.com/advisories/openclaw-hostname-prefix-matching-bypass-in-trusted-retry-endpoint-validation · Note