CVE-2019-16781

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

Description

In WordPress before 5.3.1, authenticated users with lower privileges (like contributors) can inject JavaScript code in the block editor, which is executed within the dashboard. It can lead to an admin opening the affected post in the editor leading to XSS.

Category

5.8
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 3.40% Top 15%
Vendor Advisory debian.org Vendor Advisory debian.org
Affected: WordPress WordPress
Published at:
Updated at:

References

Link Tags
https://wpvulndb.com/vulnerabilities/9976 third party advisory
https://wordpress.org/news/2019/12/wordpress-5-3-1-security-and-maintenance-release/ third party advisory release notes
https://github.com/WordPress/wordpress-develop/security/advisories/GHSA-pg4x-64rh-3c9v third party advisory
https://hackerone.com/reports/731301 third party advisory permissions required
https://seclists.org/bugtraq/2020/Jan/8 third party advisory mailing list
https://www.debian.org/security/2020/dsa-4599 third party advisory vendor advisory
https://www.debian.org/security/2020/dsa-4677 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-16781?
CVE-2019-16781 has been scored as a medium severity vulnerability.
How to fix CVE-2019-16781?
To fix CVE-2019-16781, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-16781 being actively exploited in the wild?
It is possible that CVE-2019-16781 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-16781?
CVE-2019-16781 affects WordPress WordPress.
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