high severity ยท published 2026-11-03
A remote attacker who tricks the user can get around the same-origin rule that keeps websites apart through a crafted web page, using a confused deputy flaw in the DevTools component of Chrome. Chromium rates it Medium.
Fixed in: 157.0.8103.38
CVE: CVE-2026-121171
Source: NVD
Fixlane has a reviewed fix procedure for this incident: a read-only check first, then the fix. Ask the Telegram bot, or connect an AI agent to the Fixlane MCP server and call get_fix_prompt with incident id 747 and your operating system.