Is CVE-2019-13478 actively exploited?

No active exploitation of CVE-2019-13478 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2019-13478 be exploited remotely?

Yes. CVE-2019-13478 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2019-13478?

CVE-2019-13478 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2019-13478

CRITICAL

CVE-2019-13478

CWE-79Published: July 9, 2019· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

The Yoast SEO plugin before 11.6-RC5 for WordPress does not properly restrict unfiltered HTML in term descriptions.

NVD Source

Technical Analysis

CVE-2019-13478 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.