CVE-2019-11691
9.8
CRITICAL
CVSS 3.1
EPSS 0.73%
Description
A use-after-free vulnerability can occur when working with XMLHttpRequest (XHR) in an event loop, causing the XHR main thread to be called after it has been freed. This results in a potentially exploitable crash. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.
How to fix CVE-2019-11691
To remediate CVE-2019-11691, upgrade the affected package to a fixed version below.
- Debian/firefox-esr—upgrade to 60.7.0esr-1 or later
- —upgrade to 1:60.7.0-1 or later
Is CVE-2019-11691 being exploited?
Low — EPSS is 0.7%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 60.7.0esr-1
- from 0, < 1:60.7.0-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |