Chrome, Firefox Updates Patch 115 Vulnerabilities

Google's Chrome 153 fixes 42 security flaws, including CVE-2026-91726 in WebGL and use-after-free vulnerabilities CVE-2026-91721 and CVE-2026-91749; the release is rolling out as 153.0.8010.47/.48 for Windows and macOS and 153.0.8010.47 for Linux. Mozilla's Firefox 156 addresses 73 vulnerabilities, with related fixes also available in Thunderbird 156 and 140.16 and Firefox ESR 153.3, 140.16, and 115.41; neither vendor reports exploitation, but users should update promptly.