CVE-2026-41372

MEDIUM

OpenClaw < 2026.4.2 - Loopback Protection Bypass via Trailing-Dot Localhost in CDP Discovery

Title source: cna
STIX 2.1

Description

OpenClaw before 2026.4.2 fails to normalize trailing-dot localhost hosts in remote CDP discovery responses, allowing bypass of loopback protections. Attackers can craft hostile discovery responses returning localhost. to retarget authenticated browser control toward localhost endpoints and expose browser state.

References (3)

Core 3
Core References
Vendor Advisory vendor-advisory
GitHub Security Advisory (GHSA-fh32-73r9-rgh5)
https://github.com/openclaw/openclaw/security/advisories/GHSA-fh32-73r9-rgh5
Third Party Advisory third-party-advisory
VulnCheck Advisory: OpenClaw < 2026.4.2 - Loopback Protection Bypass via Trailing-Dot Localhost in CDP Discovery
https://www.vulncheck.com/advisories/openclaw-loopback-protection-bypass-via-trailing-dot-localhost-in-cdp-discovery

Scores

CVSS v3 5.8
EPSS 0.0025
EPSS Percentile 16.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-639
Status published
Products (4)
npm/openclaw 0 - 2026.4.2npm
OpenClaw/OpenClaw < 2026.4.2
openclaw/openclaw < 2026.4.2
OpenClaw/OpenClaw 2026.4.2
Published Apr 28, 2026
Tracked Since Apr 28, 2026