WordPress security changelog
MEDIUM CVE-2020-9459 Modified

Modern Events Calendar Lite: Cross-site scripting

Modern Events Calendar Lite is affected by cross-site scripting. Exposure depends on how the affected operation is made reachable by the site. Injected script can execute in the affected site's origin when the vulnerable output is viewed.

CVE / CNA score 5.4 CVSS · cve@mitre.org
NVD score 5.4 CVSS 3.1 · nvd@nist.gov
Component
Modern Events Calendar Lite
Plugin slug
modern-events-calendar-lite
Affected
See vendor advisory
Safe version
See mitigation notes
Published
Feb 28, 2020
Weakness
CWE-79 — Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

This CVE was published Feb 28, 2020 and is one of 17 known issues for this plugin.

Update, patch or deactivate.

Update Modern Events Calendar Lite to a release outside the affected range, or disable and remove it until a fixed version is available.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Technical 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 vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Primary and upstream sources