CVE-2025-31561: Ultimate Push Notifications SQLi Vulnerability

CVE-2025-31561 Overview

CVE-2025-31561 is a SQL Injection vulnerability in the CodeSolz Ultimate Push Notifications plugin for WordPress. The flaw affects all versions up to and including 1.2.0. An authenticated attacker with low privileges can inject malicious SQL into queries processed by the plugin. Because the attack scope changes, the impact extends beyond the vulnerable component to other database resources. Confidentiality of stored data is at high risk, while availability faces partial impact. The vulnerability is tracked under CWE-89, Improper Neutralization of Special Elements used in an SQL Command.

Critical Impact
An authenticated attacker can extract sensitive WordPress database contents, including user credentials and session data, through crafted SQL payloads sent over the network.

Affected Products

CodeSolz Ultimate Push Notifications WordPress plugin
All versions from initial release through 1.2.0
WordPress sites with the ultimate-push-notifications plugin installed and active

Discovery Timeline

2025-04-01 - CVE-2025-31561 published to NVD
2026-04-23 - Last updated in NVD database

Technical Details for CVE-2025-31561

Vulnerability Analysis

The vulnerability resides in the Ultimate Push Notifications plugin's handling of user-supplied input within SQL query construction. The plugin fails to properly neutralize special characters before passing values into database queries. An authenticated user can supply crafted parameters that break out of the intended query context. The resulting injection allows execution of attacker-controlled SQL statements against the WordPress database. The Patchstack advisory confirms the issue is reachable through plugin functionality exposed to authenticated sessions.

Root Cause

The root cause is the absence of parameterized queries or proper input sanitization through WordPress functions such as $wpdb->prepare(). User-controlled values are concatenated directly into SQL statements. This pattern violates the secure database access guidance for WordPress plugin development under CWE-89.

Attack Vector

The attack is delivered over the network and requires low-privilege authentication. No user interaction is required, and the attack complexity is low. An attacker submits SQL payloads through plugin endpoints that accept parameters used in database queries. Successful exploitation can extract data from any table the WordPress database user can access, including wp_users and wp_usermeta. The changed scope in the CVSS vector reflects the ability to impact resources beyond the plugin itself.

No public proof-of-concept code is currently available. Technical specifics are documented in the Patchstack SQL Injection Vulnerability advisory.

Detection Methods for CVE-2025-31561

Indicators of Compromise

Unexpected SQL syntax characters such as UNION, SELECT, --, or ' in HTTP request parameters targeting ultimate-push-notifications endpoints
Anomalous database query volume or duration originating from WordPress requests authenticated as low-privilege users
New or modified administrative accounts in wp_users without corresponding admin activity logs
Database error responses returned in HTTP traffic to plugin endpoints

Detection Strategies

Inspect web server access logs for plugin request paths containing URL-encoded SQL metacharacters
Deploy a Web Application Firewall (WAF) rule set tuned to detect WordPress plugin SQL injection patterns
Correlate authenticated subscriber-level sessions with unusual database read activity
Review WordPress debug.log and database error logs for malformed query entries

Monitoring Recommendations

Forward WordPress access logs and database query logs to a centralized SIEM for correlation
Alert on outbound data transfers from WordPress hosts that exceed established baselines
Track plugin version inventory across managed WordPress instances to identify vulnerable installations
Monitor for credential reuse attempts elsewhere following any suspected compromise of WordPress user data

How to Mitigate CVE-2025-31561

Immediate Actions Required

Identify all WordPress sites running the CodeSolz Ultimate Push Notifications plugin at version 1.2.0 or earlier
Deactivate and remove the plugin until a fixed version is confirmed available from the vendor
Rotate WordPress administrator credentials and API keys if the plugin has been active on internet-facing sites
Review database contents and audit logs for signs of unauthorized read operations

Patch Information

At the time of NVD publication, no fixed version is listed in the advisory. The Patchstack record indicates affected versions up to and including 1.2.0. Administrators should consult the Patchstack SQL Injection Vulnerability advisory and the CodeSolz vendor channel for patch availability before reinstallation.

Workarounds

Remove the ultimate-push-notifications plugin from active WordPress installations
Restrict registration and subscriber account creation to limit the pool of authenticated attackers
Apply WAF virtual patching rules that block SQL injection signatures against the plugin's request paths
Enforce least-privilege database accounts for the WordPress connection where possible

bash

# Identify and disable the vulnerable plugin via WP-CLI
wp plugin list --name=ultimate-push-notifications --fields=name,status,version
wp plugin deactivate ultimate-push-notifications
wp plugin delete ultimate-push-notifications