---
id: CVE-2025-8561
title: >-
  The Ova Advent plugin for WordPress is vulnerable to Stored Cross-Site
  Scripting via the plugin's shortcodes in all versions up to, and including,
  1.1.7 due to insufficient input sanitization and output escaping on user
  supplied attribut…
summary: >-
  The Ova Advent plugin for WordPress is vulnerable to Stored Cross-Site
  Scripting via the plugin's shortcodes in all versions up to, and including,
  1.1.7 due to insufficient input sanitization and output escaping on user
  supplied attribut…
severity: medium
cvss: 6.4
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'
cwe:
  - CWE-87
published: '2025-10-15'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T12:10:00.217'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-8561'
references:
  - url: >-
      https://themeforest.net/item/em4u-event-management-multipurpose-wordpress-theme/20846579
    label: security@wordfence.com
  - url: >-
      https://themeforest.net/item/em4u-event-management-multipurpose-wordpress-theme/20846579#item-description__change_log
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/da6bf521-0c22-4839-8fa6-a0d67e28cfbd?source=cve
    label: security@wordfence.com
tags:
  - nvd
epss: 0.00231
epssPercentile: 0.12811
ingestedAt: '2026-10-08T11:31:27.416Z'
---

## Overview

The Ova Advent plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's shortcodes in all versions up to, and including, 1.1.7 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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.