Firefox 151 packs big privacy upgrades into a small update

Mozilla Firefox 151 release notes describe privacy improvements (stronger anti-fingerprinting, local network access prompts, and a new "end private session" control) and security updates, notably a fix for CVE‑2026‑8953 — a use‑after‑free in the Disability Access APIs that could enable a sandbox escape. No active exploitation has been reported; users are advised to update to Firefox 151 to obtain the privacy protections and security patches.