CVE-2016-1949
8.8
HIGH
CVSS 3.1
EPSS 0.18%
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.
How to fix CVE-2016-1949
To remediate CVE-2016-1949, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 45.0esr-1 or later
Is CVE-2016-1949 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 45.0esr-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |