CVE-2026-12034 [HIGH] – Insufficient validation of untrusted input in Linux Toolkit Theming in Google Chrome on Li

Insufficient validation of untrusted input in Linux Toolkit Theming in Google Chrome on Linux prior to 149.0.7827.115 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a malicious file. (Chromium security severity: High)