firefox: Spoofing of protocol registration notification bar
Published Feb 28, 2019
4.3
MEDIUMCVSS 3.0
EPSS 1.57%
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.
Affected products
-
- Version unspecifiedStatusaffectedConstraints<63
- Version
Configuration 2
- 14.04
- 16.04
- 18.04
- 18.10
No data.
Red Hat Enterprise Linux 6
firefox
Will not fix
Red Hat Enterprise Linux 7
firefox
Will not fix
Red Hat Enterprise Linux 8
firefox
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | firefox | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | firefox | Will not fix | n/a |
| Red Hat Enterprise Linux 8 | firefox | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
AV:N/AC:M/Au:N/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 1.57% (0.01565) | 74.44th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.36% (0.01356) | 67.90th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.57% (0.00570) | 66.63th | v4 (v2025.03.14) |
| Dec 13, 2024 | 0.25% (0.00246) | 65.15th | v3 (v2023.03.01) |
| Feb 22, 2024 | 0.58% (0.00578) | 77.43th | v3 (v2023.03.01) |
| Feb 15, 2024 | 0.65% (0.00646) | 78.68th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.65% (0.00646) | 76.67th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.43% (0.00427) | 70.38th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.25% (0.01247) | 30.57th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.25% (0.01247) | 0.00th | v1 |
References (10)
- http://www.securityfocus.com/bid/105721 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1041944 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2018-12399 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1490276 x_refsource_CONFIRMIssue TrackingPermissions RequiredVendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1693614 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2018-12399
- https://usn.ubuntu.com/3801-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-12399
- https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/#CVE-2018-12399
- https://www.mozilla.org/security/advisories/mfsa2018-26/ x_refsource_CONFIRMVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/105721 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1041944 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2018-12399 | Vendor Advisory | |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1490276 | x_refsource_CONFIRMIssue TrackingPermissions RequiredVendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1693614 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-12399 | ||
| https://usn.ubuntu.com/3801-1/ | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2018-12399 | ||
| https://www.mozilla.org/en-US/security/advisories/mfsa2018-26/#CVE-2018-12399 | ||
| https://www.mozilla.org/security/advisories/mfsa2018-26/ | x_refsource_CONFIRMVendor Advisory |
Change history (0)
No recorded changes yet.