Is CVE-2020-9459 actively exploited?

Yes. CVE-2020-9459 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, which means exploitation in the wild has been confirmed.

Can CVE-2020-9459 be exploited remotely?

The attack vector of CVE-2020-9459 has not been classified yet.

What is the CVSS score of CVE-2020-9459?

CVE-2020-9459 has not received a CVSS score yet.

HOME VULNERABILITIESCVE-2020-9459

UNKNOWNCISA KEVIN THE WILD

CVE-2020-9459

Published: April 11, 2026

EPSS:0.18%probability of exploitation in 30 daysPercentile:40.2th

Official Description

Multiple Stored Cross-site scripting (XSS) vulnerabilities in the Webnus Modern Events Calendar Lite plugin through 5.1.6 for WordPress allows remote authenticated users (with minimal permissions) to inject arbitrary JavaScript, HTML, or CSS via Ajax actions. This affects mec_save_notifications and import_settings.

NVD Source

Technical Analysis

CVE-2020-9459 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

CISA has added CVE-2020-9459 to the Known Exploited Vulnerabilities (KEV) catalog, confirming active exploitation in the wild. U.S. federal agencies are required to patch this within the mandated timeframe, and all organizations should treat remediation as urgent.