high severity ยท published 2026-08-18
A use-after-free memory bug in the Graphics Canvas2D component affects both Firefox and Thunderbird. The source does not describe the exact impact.
Fixed in: 153.1.0
CVE: CVE-2026-74949
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 174 and your operating system.