Mozilla: Add-on notification bypass through data URLs (MFSA 2015-95)
Published Aug 29, 2015
7.5
HIGHCVSS 2.0
EPSS 2.68%
Description
The add-on installation feature in Mozilla Firefox before 40.0.3 and Firefox ESR 38.x before 38.2.1 allows remote attackers to bypass an intended user-confirmation requirement by constructing a crafted data: URL and triggering navigation to an arbitrary http: or https: URL at a certain early point in the installation process.
Affected products
No data.
No data.
Red Hat Enterprise Linux 5
firefox-0:38.2.1-1.el5_11
Fixed · RHSA-2015:1693
Red Hat Enterprise Linux 6
firefox-0:38.2.1-1.el6_7
Fixed · RHSA-2015:1693
Red Hat Enterprise Linux 7
firefox-0:38.2.1-1.ael7b_1
Fixed · RHSA-2015:1693
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | firefox-0:38.2.1-1.el5_11 | Fixed | RHSA-2015:1693 |
| Red Hat Enterprise Linux 6 | firefox-0:38.2.1-1.el6_7 | Fixed | RHSA-2015:1693 |
| Red Hat Enterprise Linux 7 | firefox-0:38.2.1-1.ael7b_1 | Fixed | RHSA-2015:1693 |
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.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:P/A:P
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 2, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 2.68% (0.02678) | 85.30th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.68% (0.02678) | 83.80th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.58% (0.00577) | 66.25th | v4 (v2025.03.14) |
| Mar 29, 2025 | 1.62% (0.01619) | 70.28th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.58% (0.00577) | 66.92th | v4 (v2025.03.14) |
| Dec 12, 2024 | 2.04% (0.02040) | 89.43th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.04% (0.02040) | 87.17th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.73th | v2 (v2022.01.01) |
References (16)
- http://lists.opensuse.org/opensuse-security-announce/2015-09/msg00013.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2015-11/msg00025.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2015-09/msg00000.html vendor-advisoryx_refsource_SUSE
- http://rhn.redhat.com/errata/RHSA-2015-1693.html vendor-advisoryx_refsource_REDHAT
- http://www.debian.org/security/2015/dsa-3345 vendor-advisoryx_refsource_DEBIAN
- http://www.mozilla.org/security/announce/2015/mfsa2015-95.html x_refsource_CONFIRMVendor Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/76505 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1033396 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-2723-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2015-4498 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1042699 x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=1257278 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2015-4498
- https://www.cve.org/CVERecord?id=CVE-2015-4498
- https://www.mozilla.org/security/announce/2015/mfsa2015-95.html
Change history (0)
No recorded changes yet.