CVE-2026-41372CWE-639

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

Medium · published April 27, 2026

CVSS v4.0
6.9
EPSS
0%
Percentile
36.8
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.9 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N
EPSS
0.00436 · 36.8th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-04-27T23:24Z
EPSS history
Timeline
  • 27 APR 23:24Z
    OpenClaw < 2026.4.2 - Loopback Protection Bypass via Trailing-Dot Localhost in CDP Discovery
    cvelistv5