CVE-2018-12400: In private browsing mode on Firefox for… (CVSS 5.3)

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: None
Availability: None

Exploit likelihood

1.57%Up 1.1 points since Apr 14, 2021

Affected products

mozilla firefox

Affected packages

Affected packages
Package	Affected	Fixed
`MozillaFirefox` openSUSE:Tumbleweed From an advisory covering 661 CVEs	before 92.0-1.2	92.0-1.2
`firefox-esr` openSUSE:Tumbleweed From an advisory covering 1860 CVEs	before 128.5.1-1.1	128.5.1-1.1

What each source reports

NVD Score used5.3

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.

Record: CVE-2018-12400
CVSS 3.0: 5.3 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CVSS 2.0: 5.0 MediumAV:N/AC:L/Au:N/C:P/I:N/A:N
Weakness: CWE-200
Updated: 2026-11-02

CVE ListNo score

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.

Record: CVE-2018-12400
Updated: 2026-11-02

EUVDEUVD-2018-4374No score

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.

Record: EUVD-2018-4374
Updated: 2026-11-03

GitHub AdvisoriesGHSA-wxmw-mw39-8fw95.3

In private browsing mode on Firefox for Android, favicons are cached in the cache/icons folder as...

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.

Record: GHSA-wxmw-mw39-8fw9
CVSS 3.0: 5.3 MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-200
Updated: 2026-11-02

OSVopenSUSE-SU-2024:10600-1No score

MozillaFirefox-92.0-1.2 on GA media

These are all security issues fixed in the MozillaFirefox-92.0-1.2 package on the GA media of openSUSE Tumbleweed.