CVE-2025-31586: Gallery Photo Albums Plugin XSS Vulnerability

CVE-2025-31586 Overview

CVE-2025-31586 is a stored cross-site scripting (XSS) vulnerability in the GhozyLab Gallery – Photo Albums Plugin (easy-media-gallery) for WordPress. The flaw stems from improper neutralization of user-supplied input during web page generation [CWE-79]. Attackers with low-privileged authenticated access can inject malicious scripts that persist in the database and execute in the browsers of other users who view affected pages. The vulnerability affects all versions of the plugin from initial release through and including 1.3.170.

Critical Impact
An authenticated attacker can inject persistent JavaScript payloads that execute in visitor and administrator browsers, enabling session hijacking, credential theft, and unauthorized actions within the WordPress environment.

Affected Products

GhozyLab Gallery – Photo Albums Plugin (easy-media-gallery) versions up to and including 1.3.170
WordPress sites with the vulnerable plugin installed and activated
Any front-end or administrative page rendering unsanitized gallery content

Discovery Timeline

2025-03-31 - CVE-2025-31586 published to the National Vulnerability Database
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2025-31586

Vulnerability Analysis

The vulnerability is a stored XSS flaw in the easy-media-gallery plugin. Stored XSS occurs when an application accepts untrusted input, saves it persistently, and later renders it in a web page without proper output encoding. In this case, the plugin fails to neutralize special characters in fields that are subsequently written to gallery-related pages.

Exploitation requires an authenticated user with low privileges to submit a crafted payload. User interaction is also required for the payload to trigger, typically by inducing a victim to view the affected gallery page. Because the injected script runs within the origin of the WordPress site, it can access session cookies, perform authenticated requests on behalf of the victim, and manipulate rendered content.

The scope is marked as changed, meaning the vulnerable component can affect resources beyond its own security scope. In WordPress plugin XSS scenarios, this typically manifests as scripts executing in the browser context of administrators who visit pages containing attacker-controlled gallery content.

Root Cause

The root cause is missing or insufficient sanitization and escaping of gallery input before storage and rendering. WordPress provides functions such as sanitize_text_field(), wp_kses_post(), and esc_html() to neutralize dangerous input, but the affected plugin does not consistently apply them to the vulnerable fields through version 1.3.170.

Attack Vector

The attack is delivered over the network by an authenticated contributor-level or higher user. The attacker submits gallery data containing JavaScript payloads through the plugin's editing interface. The payload is stored in the WordPress database and rendered when victims visit the affected page. See the Patchstack Vulnerability Report for technical details.

Detection Methods for CVE-2025-31586

Indicators of Compromise

Gallery entries, titles, captions, or metadata containing <script> tags, on* event handlers, or javascript: URIs
Unexpected outbound requests from administrator browsers to attacker-controlled domains after viewing gallery pages
WordPress user accounts created or modified without corresponding administrator activity
New administrative users, plugins, or themes installed shortly after gallery content edits by low-privileged accounts

Detection Strategies

Query the wp_posts and plugin-specific tables for gallery records containing script tags, event handlers, or encoded JavaScript payloads
Monitor WordPress audit logs for gallery modifications performed by contributor or author roles
Deploy a web application firewall rule set that inspects POST parameters submitted to easy-media-gallery endpoints for XSS signatures

Monitoring Recommendations

Enable Content Security Policy (CSP) reporting to capture script execution violations on gallery pages
Log and alert on administrator sessions that trigger unexpected AJAX requests to WordPress REST endpoints such as /wp-json/wp/v2/users
Track plugin version inventory across WordPress deployments to identify hosts still running easy-media-gallery1.3.170 or earlier

How to Mitigate CVE-2025-31586

Immediate Actions Required

Update the GhozyLab Gallery – Photo Albums Plugin to a version later than 1.3.170 as soon as a fixed release is available
Audit contributor, author, and editor accounts and remove or downgrade any that do not require content submission privileges
Review existing gallery entries for stored payloads and remove any content containing script or event handler markup

Patch Information

At the time of publication, the vulnerability affects all versions up to and including 1.3.170. Refer to the Patchstack Vulnerability Report for the latest fixed version and vendor advisory information.

Workarounds

Deactivate and remove the easy-media-gallery plugin until a patched version is installed
Restrict plugin edit capabilities to trusted administrators by adjusting role permissions or using a role management plugin
Deploy a web application firewall with virtual patching rules that block XSS payloads submitted to gallery endpoints
Implement a strict Content Security Policy that disallows inline scripts on pages that render gallery content

bash

# Example Content Security Policy header for WordPress hosting
Header set Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; base-uri 'self'; frame-ancestors 'self'"