firefox: Same-origin-policy violation using Service Workers with plugins
Published Feb 13, 2016
8.8
HIGHCVSS 3.0
EPSS 1.50%
Description
Mozilla Firefox before 44.0.2 does not properly restrict the interaction between Service Workers and plugins, which allows remote attackers to bypass the Same Origin Policy via a crafted web site that triggers spoofed responses to requests that use NPAPI, as demonstrated by a request for a crossdomain.xml file.
Affected products
No data.
No data.
Red Hat Enterprise Linux 5
firefox
Not affected
Red Hat Enterprise Linux 6
firefox
Not affected
Red Hat Enterprise Linux 7
firefox
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | firefox | Not affected | n/a |
| Red Hat Enterprise Linux 6 | firefox | Not affected | n/a |
| Red Hat Enterprise Linux 7 | firefox | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue does not affect the versions of Firefox shipped with Red Hat Enterprise Linux 5, 6 and 7.
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:H/I:H/A:H
AV:N/AC:M/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 1, 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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.50% (0.01503) | 73.37th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.50% (0.01503) | 70.88th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.18% (0.00179) | 37.21th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.82% (0.00821) | 82.58th | v3 (v2023.03.01) |
| Jun 3, 2024 | 0.82% (0.00821) | 81.88th | v3 (v2023.03.01) |
| Sep 30, 2023 | 0.82% (0.00821) | 79.88th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.76% (0.00756) | 78.22th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
References (12)
- http://lists.opensuse.org/opensuse-updates/2016-02/msg00102.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2016-02/msg00142.html vendor-advisoryx_refsource_SUSE
- http://www.mozilla.org/security/announce/2016/mfsa2016-13.html x_refsource_CONFIRMVendor Advisory
- http://www.securitytracker.com/id/1035007 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-2893-1 vendor-advisoryx_refsource_UBUNTU
- https://access.redhat.com/security/cve/CVE-2016-1949 Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1245724 x_refsource_CONFIRM
- https://bugzilla.redhat.com/show_bug.cgi?id=1306856 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2016-1949
- https://security.gentoo.org/glsa/201605-06 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2016-1949
- https://www.mozilla.org/en-US/security/advisories/mfsa2016-13/
| Link | Providers | Tags |
|---|---|---|
| http://lists.opensuse.org/opensuse-updates/2016-02/msg00102.html | vendor-advisoryx_refsource_SUSE | |
| http://lists.opensuse.org/opensuse-updates/2016-02/msg00142.html | vendor-advisoryx_refsource_SUSE | |
| http://www.mozilla.org/security/announce/2016/mfsa2016-13.html | x_refsource_CONFIRMVendor Advisory | |
| http://www.securitytracker.com/id/1035007 | vdb-entryx_refsource_SECTRACK | |
| http://www.ubuntu.com/usn/USN-2893-1 | vendor-advisoryx_refsource_UBUNTU | |
| https://access.redhat.com/security/cve/CVE-2016-1949 | Vendor Advisory | |
| https://bugzilla.mozilla.org/show_bug.cgi?id=1245724 | x_refsource_CONFIRM | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1306856 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2016-1949 | ||
| https://security.gentoo.org/glsa/201605-06 | vendor-advisoryx_refsource_GENTOO | |
| https://www.cve.org/CVERecord?id=CVE-2016-1949 | ||
| https://www.mozilla.org/en-US/security/advisories/mfsa2016-13/ |
Change history (0)
No recorded changes yet.