CVE-2019-16780CWE-79

Stored cross-site scripting (XSS) in WordPress block editor

Medium · published December 26, 2019

CVSS v3.1
5.8
EPSS
2%
Percentile
77.0
In the wild
Unconfirmed
What it is

WordPress users with lower privileges (like contributors) can inject JavaScript code in the block editor using a specific payload, which is executed within the dashboard. This can lead to XSS if an admin opens the post in the editor. Execution of this attack does require an authenticated user. This has been patched in WordPress 5.3.1, along with all the previous WordPress versions from 3.7 to 5.3 via a minor release. Automatic updates are enabled by default for minor releases and we strongly recommend that you keep them enabled.

The record
Technical detail
CVSS v3.1
5.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.01697 · 77.0th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2019-12-26T16:50Z
EPSS history
Timeline
  • 26 DEC 16:50Z
    Stored cross-site scripting (XSS) in WordPress block editor
    cvelistv5