CVE-2017-5386
7.3
HIGH
CVSS 3.1
EPSS 1.2%
Description
WebExtension scripts can use the "data:" protocol to affect pages loaded by other web extensions using this protocol, leading to potential data disclosure or privilege escalation in affected extensions. This vulnerability affects Firefox ESR < 45.7 and Firefox < 51.
How to fix CVE-2017-5386
To remediate CVE-2017-5386, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 45.7.0esr-1 or later
Is CVE-2017-5386 being exploited?
Low — EPSS is 1.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 45.7.0esr-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L |