CVE-2020-15661: Mozilla Firefox Mobile

Medium severity, CVSS 6.5. EPSS: 0.8% chance of exploitation in the next 30 days.

A rogue webpage could override the injected WKUserScript used by the logins autofill, this exploit could result in leaking a password for the current domain. This vulnerability affects Firefox for iOS < 28.

Affected products

• Mozilla Firefox Mobile: before 28.0 (fixed in 28.0)

Published 2020-08-10. Last modified 2026-08-19.