CVE-2018-12369

Name: CVE-2018-12369
Creator: NVD / NIST
Published: 2018-10-18T13:29:03.663+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.52%

Last modified Jun 17, 2026

CVE-2018-12369 is a vulnerability of currently unknown severity. WebExtensions bundled with embedded experiments were not correctly checked for proper authorization. This allowed a malicious WebExtension to gain full browser permissions. EPSS estimates a 2.52% chance of exploitation in the next 30 days.

Description

WebExtensions bundled with embedded experiments were not correctly checked for proper authorization. This allowed a malicious WebExtension to gain full browser permissions. This vulnerability affects Firefox ESR < 60.1 and Firefox < 61.

Metrics

EPSS Probability

2.52%

82.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-863

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	< 60.1.0
Mozilla	Firefox	< 61.0
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	17.10
Canonical	Ubuntu Linux	18.04

References

http://www.securityfocus.com/bid/104561Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1041193Third Party Advisory, VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1454909Issue Tracking, Permissions Required, Vendor Advisory
https://security.gentoo.org/glsa/201810-01Third Party Advisory
https://usn.ubuntu.com/3705-1/Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2018-15/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2018-16/Vendor Advisory
http://www.securityfocus.com/bid/104561Third Party Advisory, VDB Entry
http://www.securitytracker.com/id/1041193Third Party Advisory, VDB Entry
https://bugzilla.mozilla.org/show_bug.cgi?id=1454909Issue Tracking, Permissions Required, Vendor Advisory
https://security.gentoo.org/glsa/201810-01Third Party Advisory
https://usn.ubuntu.com/3705-1/Third Party Advisory
https://www.mozilla.org/security/advisories/mfsa2018-15/Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2018-16/Vendor Advisory

Timeline

Published: Oct 18, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-12369?

How severe is CVE-2018-12369?

Severity scoring for CVE-2018-12369 is pending analysis. The EPSS model estimates a 2.52% probability of exploitation in the next 30 days.

How do I fix CVE-2018-12369?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-12369?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST