Medium severity6.5NVD Advisory· Published Feb 28, 2019· Updated Jun 17, 2026
CVE-2018-12396
CVE-2018-12396
Description
A vulnerability where a WebExtension can run content scripts in disallowed contexts following navigation or other events. This allows for potential privilege escalation by the WebExtension on sites where content scripts should not be run. This vulnerability affects Firefox ESR < 60.3 and Firefox < 63.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
39unspecified+ 4 more
- (no CPE)range: unspecified
- (no CPE)range: unspecified
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*range: <63.0
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*range: <60.3
- (no CPE)range: <60.3
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*+ 3 more
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
- osv-coords19 versionspkg:rpm/suse/MozillaFirefox&distro=SUSE%20OpenStack%20Cloud%207pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP2pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP3pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP1pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP3pkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweedpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP1-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-LTSSpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP3pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Enterprise%20Storage%204pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Desktop%2012%20SP4pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Software%20Development%20Kit%2012%20SP4pkg:rpm/suse/MozillaFirefox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweed
< 60.3.0-109.50.2+ 18 more
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-3.17.1
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 128.5.1-1.1
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 60.3.0-109.50.2
- (no CPE)range: < 92.0-1.2
Patches
Vulnerability mechanics
References
11- www.securityfocus.com/bid/105718nvdThird Party AdvisoryVDB Entry
- www.securitytracker.com/id/1041944nvdThird Party AdvisoryVDB Entry
- access.redhat.com/errata/RHSA-2018:3005nvdThird Party Advisory
- access.redhat.com/errata/RHSA-2018:3006nvdThird Party Advisory
- bugzilla.mozilla.org/show_bug.cginvdBroken LinkIssue TrackingVendor Advisory
- lists.debian.org/debian-lts-announce/2018/11/msg00008.htmlnvdThird Party Advisory
- security.gentoo.org/glsa/201811-04nvdThird Party Advisory
- usn.ubuntu.com/3801-1/nvdThird Party Advisory
- www.debian.org/security/2018/dsa-4324nvdThird Party Advisory
- www.mozilla.org/security/advisories/mfsa2018-26/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2018-27/nvdVendor Advisory
News mentions
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