CVE-2019-20041
wordpress - security update
9.8
CRITICAL
CVSS 3.1
EPSS 1.4%
Description
wp_kses_bad_protocol in wp-includes/kses.php in WordPress before 5.3.1 mishandles the HTML5 colon named entity, allowing attackers to bypass input sanitization, as demonstrated by the javascript: substring.
How to fix CVE-2019-20041
To remediate CVE-2019-20041, upgrade the affected package to a fixed version below.
- Debian/wordpress—upgrade to 5.3.2+dfsg1-1 or later
- —upgrade to 4.1.29+dfsg-0+deb8u1 or later
Is CVE-2019-20041 being exploited?
Low — EPSS is 1.4%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 5.3.2+dfsg1-1
- from 0, < 4.1.29+dfsg-0+deb8u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |