Medium severity4.3NVD Advisory· Published Feb 28, 2019· Updated Jun 17, 2026
CVE-2018-12399
CVE-2018-12399
Description
When a new protocol handler is registered, the API accepts a title argument which can be used to mislead users about which domain is registering the new protocol. This may result in the user approving a protocol handler that they otherwise would not have. This vulnerability affects Firefox < 63.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
9cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*+ 2 more
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*range: <63.0
- (no CPE)range: <63
- (no CPE)range: unspecified
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:*:*:*:*:*:*:*
- osv-coords2 versionspkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweed
< 92.0-1.2+ 1 more
- (no CPE)range: < 92.0-1.2
- (no CPE)range: < 128.5.1-1.1
Patches
Vulnerability mechanics
References
5- www.securityfocus.com/bid/105721nvdThird Party AdvisoryVDB Entry
- www.securitytracker.com/id/1041944nvdThird Party AdvisoryVDB Entry
- bugzilla.mozilla.org/show_bug.cginvdIssue TrackingPermissions RequiredVendor Advisory
- usn.ubuntu.com/3801-1/nvdThird Party Advisory
- www.mozilla.org/security/advisories/mfsa2018-26/nvdVendor Advisory
News mentions
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