CVE-2018-12400

Severity: medium (CVSS 5.3 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-02-28 · updated 2026-06-17
Weakness: CWE-200

Description

In private browsing mode on Firefox for Android, favicons are cached in the cache/icons folder as they are in non-private mode. This allows information leakage of sites visited during private browsing sessions. *Note: this issue only affects Firefox for Android. Desktop versions of Firefox are unaffected.*. This vulnerability affects Firefox < 63.

Affected products

Mozilla Firefox: before 63.0 — fixed in 63.0

How to fix

Upgrade to a fixed version: Mozilla Firefox 63.0. Check the vendor advisory for mitigations.

References

http://www.securityfocus.com/bid/105721
http://www.securitytracker.com/id/1041944
https://bugzilla.mozilla.org/show_bug.cgi?id=1448305
https://www.mozilla.org/security/advisories/mfsa2018-26/
http://www.securityfocus.com/bid/105721
http://www.securitytracker.com/id/1041944
https://bugzilla.mozilla.org/show_bug.cgi?id=1448305
https://www.mozilla.org/security/advisories/mfsa2018-26/

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