CVE-2019-11738
6.3
MEDIUM
CVSS 3.1
EPSS 0.58%
Description
If a Content Security Policy (CSP) directive is defined that uses a hash-based source that takes the empty string as input, execution of any javascript: URIs will be allowed. This could allow for malicious JavaScript content to be run, bypassing CSP permissions. This vulnerability affects Firefox < 69 and Firefox ESR < 68.1.
How to fix CVE-2019-11738
To remediate CVE-2019-11738, upgrade the affected package to a fixed version below.
- —upgrade to 68.1.0esr-1 or later
Is CVE-2019-11738 being exploited?
Low — EPSS is 0.6%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 68.1.0esr-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM6.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L |