What is CVE-2025-5540?

CVE-2025-5540 is a medium-severity vulnerability in Emarket-Design Event Rsvp And Simple Management Plugin, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2025-06-26.

How severe is CVE-2025-5540?

Medium severity. CVSS v3 base score is 6.4 out of 10.

XSS in Emarket-Design Event Rsvp And Simple Management Plugin

CVE-2025-5540

The Event RSVP and Simple Event Management Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'emd_mb_meta' shortcode in all versions up to, and including, 4.1.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2025-06-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.002 (13.6th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 13.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000

Affected products

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.wordfence.com/threat-intel/vulnerabilities/id/f09ffc02-bfed-4aa3-a3d3-58e18… (Third Party Advisory)
wordpress.org/plugins/wp-easy-events/ (Product)
plugins.trac.wordpress.org/changeset

Frequently asked questions

What is CVE-2025-5540?: CVE-2025-5540 is a medium-severity vulnerability in Emarket-Design Event Rsvp And Simple Management Plugin, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2025-06-26.
How severe is CVE-2025-5540?: Medium severity. CVSS v3 base score is 6.4 out of 10.