Sites can bypass security checks on permissions to install lightweight themes by manipulating the "baseURI" property of the theme element. This could allow a malicious site to install a theme without user interaction which could contain offensive or embarrassing images. This vulnerability affects Thunderbird < 52.8, Thunderbird ESR < 52.8, Firefox < 60, and Firefox ESR < 52.8.

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-1376-1 firefox-esr security update
Debian DLA Debian DLA DLA-1382-1 thunderbird security update
Debian DSA Debian DSA DSA-4199-1 firefox-esr security update
Debian DSA Debian DSA DSA-4209-1 thunderbird security update
EUVD EUVD EUVD-2018-16953 Sites can bypass security checks on permissions to install lightweight themes by manipulating the "baseURI" property of the theme element. This could allow a malicious site to install a theme without user interaction which could contain offensive or embarrassing images. This vulnerability affects Thunderbird < 52.8, Thunderbird ESR < 52.8, Firefox < 60, and Firefox ESR < 52.8.
Ubuntu USN Ubuntu USN USN-3645-1 Firefox vulnerabilities
Ubuntu USN Ubuntu USN USN-3660-1 Thunderbird vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Tue, 25 Nov 2025 18:00:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Vendors & Products Mozilla firefox Esr

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2024-08-05T05:26:46.983Z

Reserved: 2018-01-03T00:00:00

Link: CVE-2018-5168

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2018-06-11T21:29:15.767

Modified: 2025-11-25T17:50:16.803

Link: CVE-2018-5168

cve-icon Redhat

Severity : Moderate

Publid Date: 2018-05-09T00:00:00Z

Links: CVE-2018-5168 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses