CVE-2019-11711
8.8
HIGH
CVSS 3.1
EPSS 1.5%
Description
When an inner window is reused, it does not consider the use of document.domain for cross-origin protections. If pages on different subdomains ever cooperatively use document.domain, then either page can abuse this to inject script into arbitrary pages on the other subdomain, even those that did not use document.domain to relax their origin security. This vulnerability affects Firefox ESR < 60.8, Firefox < 68, and Thunderbird < 60.8.
How to fix CVE-2019-11711
To remediate CVE-2019-11711, upgrade the affected package to a fixed version below.
- —upgrade to 60.8.0esr-1 or later
- —upgrade to 1:60.8.0-1 or later
Is CVE-2019-11711 being exploited?
Low — EPSS is 1.5%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 60.8.0esr-1
- from 0, < 1:60.8.0-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |