CVE-2026-41372

MEDIUM

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

Title source: cna

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)

[Vendor Advisory] https://github.com/openclaw/openclaw/security/advisories/GHSA-fh32-73r9-rgh5

[Patch] https://github.com/openclaw/openclaw/commit/9c22d636697336a6b22b0ae24798d8b8325d7828

View Patch ZIP pw:eip

[Third Party Advisory] https://www.vulncheck.com/advisories/openclaw-loopback-protection-bypass-via-trailing-dot-localhost-in-cdp-discovery

Scores

CVSS v3 5.8

EPSS 0.0003

EPSS Percentile 8.3%

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 (3)

OpenClaw/OpenClaw < 2026.4.2

openclaw/openclaw < 2026.4.2

OpenClaw/OpenClaw 2026.4.2

Published Apr 28, 2026

Tracked Since Apr 28, 2026