The Developer Tools (aka DevTools) subsystem in Google Chrome before 48.0.2564.109 does not validate URL schemes and ensure that the remoteBase parameter is associated with a chrome-devtools-frontend.appspot.com URL, which allows remote attackers to bypass intended access restrictions via a crafted URL, related to browser/devtools/devtools_ui_bindings.cc and WebKit/Source/devtools/front_end/Runtime.js.
Severity
CVSS 3.0
8.8 high
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS
1.3% chance of exploitation in the next 30 days; higher than 70% of CVEs (scores of 2026-10-31)