high severity ยท published 2026-11-03
A remote attacker can get around the same-origin rule that keeps websites apart through a crafted web page, using an incorrect authorization flaw in the BackgroundFetch component of Chrome. Chromium rates it High.
Fixed in: 157.0.8103.38
CVE: CVE-2026-121107
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 720 and your operating system.