What’s Vulnerable › Vulnerabilities

CVE-2020-15661

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-08-10 · updated 2026-08-19
• Weakness: CWE-522

Description

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 for Android: before 28.0 — fixed in 28.0

How to fix

Upgrade to a fixed version: Mozilla Firefox for Android 28.0. Check the vendor advisory for mitigations.

References

• https://bugzilla.mozilla.org/show_bug.cgi?id=1654131
• https://www.mozilla.org/security/advisories/mfsa2020-34/
• https://bugzilla.mozilla.org/show_bug.cgi?id=1654131
• https://www.mozilla.org/security/advisories/mfsa2020-34/

Get alerted when CVE-2020-15661 or the next vulnerability affects your stack