CVE-2025-7725 Overview
CVE-2025-7725 is a Stored Cross-Site Scripting (XSS) vulnerability [CWE-79] in the Contest Gallery plugin for WordPress. The flaw affects the plugin marketed as "Photos, Files, YouTube, Twitter, Instagram, TikTok, Ecommerce Contest Gallery – Upload, Vote, Sell via PayPal or Stripe, Social Share Buttons, OpenAI" in all versions up to and including 26.1.0. The vulnerability resides in the comment feature, which fails to properly sanitize input and escape output. Unauthenticated attackers can inject arbitrary JavaScript that executes whenever a user views an affected page.
Critical Impact
Unauthenticated attackers can inject persistent JavaScript through the plugin's comment feature, enabling session theft, administrative account takeover, and arbitrary redirection of site visitors.
Affected Products
- Contest Gallery plugin for WordPress, versions through 26.1.0
- WordPress installations with the plugin's comment feature enabled
- Sites accepting unauthenticated comments via the affected plugin
Discovery Timeline
- 2025-08-01 - CVE-2025-7725 published to NVD
- 2026-04-15 - Last updated in NVD database
Technical Details for CVE-2025-7725
Vulnerability Analysis
The Contest Gallery plugin exposes a comment feature that accepts user-supplied input without sufficient validation. The plugin neither sanitizes incoming comment data nor escapes the values before rendering them in HTML responses. Attackers submit comments containing JavaScript payloads, which the plugin stores in the WordPress database. When any visitor — including authenticated administrators — loads a page that renders the malicious comment, the browser executes the injected script in the context of the site origin.
Stored XSS in a comment surface is particularly impactful because the payload persists and reaches every visitor without further attacker interaction. Successful exploitation allows attackers to hijack authenticated sessions, perform actions on behalf of administrators, exfiltrate sensitive data from the DOM, or pivot to broader site compromise through plugin and theme modification.
Root Cause
The root cause is insufficient input sanitization on write and missing output escaping on read within the plugin's comment handling logic. The plugin trusts user-submitted comment fields and emits them into the page without applying WordPress core escaping functions such as esc_html(), wp_kses(), or esc_attr(). This classifies the issue under [CWE-79]: Improper Neutralization of Input During Web Page Generation.
Attack Vector
The attack vector is network-based and requires no authentication or user interaction beyond a victim visiting an affected page. An unauthenticated attacker submits a crafted comment containing a script payload through the plugin's public comment endpoint. The payload is stored and later rendered to every viewer of the target page. The scope is changed because script execution occurs in the security context of the WordPress site, which differs from the vulnerable plugin component itself.
No verified public proof-of-concept code is available. Refer to the Wordfence Vulnerability Report for technical write-up details.
Detection Methods for CVE-2025-7725
Indicators of Compromise
- Comment records containing <script>, javascript:, onerror=, onload=, or encoded variants stored in the wp_comments table or plugin-specific tables.
- Outbound browser requests from site visitors to attacker-controlled domains originating from gallery or contest pages.
- Unexpected administrative actions such as new admin users, modified theme files, or plugin installs following comment submissions.
Detection Strategies
- Query the WordPress database for stored comment content matching HTML tags or event handler patterns associated with the Contest Gallery plugin.
- Inspect web server access logs for POST requests to Contest Gallery comment endpoints from unauthenticated sources containing script-like payloads.
- Deploy a web application firewall rule that flags HTML or JavaScript tokens submitted to plugin comment parameters.
Monitoring Recommendations
- Monitor the installed Contest Gallery plugin version and alert on any instance reporting 26.1.0 or earlier.
- Track creation of new WordPress administrator accounts and changes to user roles correlated with recent comment activity.
- Review browser Content Security Policy (CSP) violation reports for inline script execution on pages that render Contest Gallery content.
How to Mitigate CVE-2025-7725
Immediate Actions Required
- Update the Contest Gallery plugin to a version newer than 26.1.0 that contains the upstream fix.
- Audit existing comments stored by the plugin and remove entries containing HTML tags or JavaScript payloads.
- Rotate credentials and session tokens for WordPress administrators who accessed affected pages while the plugin was vulnerable.
Patch Information
The vendor addressed the issue in the plugin source tree. See the WordPress Changeset Update for the specific code changes applied between revisions 3333852 and 3334370. Apply the corresponding plugin update from the WordPress plugin repository.
Workarounds
- Disable the Contest Gallery plugin until the patched version is installed.
- Disable the plugin's comment feature in the plugin settings if patching is not immediately possible.
- Restrict comment submission to authenticated users and enforce a strict Content Security Policy that blocks inline scripts on pages rendering plugin content.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
