CVE-2023-5758: Mozilla Firefox Mobile

Medium severity, CVSS 6.1. EPSS: 0.4% chance of exploitation in the next 30 days.

When opening a page in reader mode, the redirect URL could have caused attacker-controlled script to execute in a reflected Cross-Site Scripting (XSS) attack. This vulnerability affects Firefox for iOS < 119.

Affected products

• Mozilla Firefox Mobile: before 119.0 (fixed in 119.0)

Published 2023-10-25. Last modified 2026-08-19.