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TI-2020-12336 Aliases CVE-2020-15661GHSA-f984-9xfw-9437

Insufficiently protected credentials in Mozilla Firefox for iOS

Priority LOW 30CWE-522Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-522.

Summary

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.

Why it matters now

EPSS 0.00852 58th percentileScored 2026-11-07
Fix Fixed Firefox for iOS (Mozilla): 28

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
MozillaFirefox for iOSbefore 2828Patch availableCNA
  • Firefox for iOS VendorMozilla Affected before 28 Fixed in 28 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:mozilla:firefox_mobile:*:*:*:*:*:iphone_os:*:*before 28.0VulnerableMozilla
  • cpe:2.3:a:mozilla:firefox_mobile:*:*:*:*:*:iphone_os:*:* Versions before 28.0 Vulnerable ·Mozilla

Remediation

  • Fix · CNA Firefox for iOS (Mozilla) Fixed in 28

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Mozilla Firefox for iOS 28

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2020-12337 A rogue webpage could override the injected WKUserScript used by the download feature…Priority LOW 30
    • TI-2020-12326 A unicode RTL order character in the downloaded file name can be used to change the…Priority LOW 21
    Show all 3 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-15661
  2. 2026-10-03 Alias added: GHSA-f984-9xfw-9437

References

Advisory 2

  • TI-2022-09832 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.6
  • TI-2022-09831 Use after free in Mozilla Firefox KEVCVSS 3.1HIGH 8.8
  • TI-2023-13905 Race condition in Mozilla Firefox for Android CVSS 3.1HIGH 7.5
  • TI-2023-13916 A wrong lowering instruction in the ARM64 Ion compiler resulted in a wrong optimization… CVSS 3.1MEDIUM 6.5
  • TI-2023-13903 Following a Garbage Collector compaction, weak maps may have been accessed before they… CVSS 3.1MEDIUM 6.5
  • TI-2022-13642 Information disclosure in Mozilla Firefox for iOS CVSS 3.1MEDIUM 6.5
See all 86 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences