CVE-2025-31641 Overview
CVE-2025-31641 is a SQL Injection vulnerability in the LambertGroup UberSlider (uber-classic) WordPress plugin. The flaw stems from improper neutralization of special elements used in an SQL command [CWE-89]. It affects all UberSlider versions from initial release through versions below 2.6. An authenticated attacker with low privileges can inject arbitrary SQL statements into queries executed by the plugin. The scope is changed, meaning exploitation can affect resources beyond the vulnerable component itself.
Critical Impact
A remote attacker with low-privileged WordPress access can read sensitive database contents and partially disrupt site availability through crafted SQL payloads.
Affected Products
- LambertGroup UberSlider (uber-classic) plugin for WordPress, all versions through < 2.6
- WordPress sites running the UberSlider plugin with authenticated user roles enabled
- Hosting environments where the WordPress database user has broad query privileges
Discovery Timeline
- 2025-05-16 - CVE-2025-31641 published to the National Vulnerability Database
- 2026-04-23 - Last updated in NVD database
Technical Details for CVE-2025-31641
Vulnerability Analysis
The vulnerability resides in UberSlider request handlers that incorporate user-supplied input directly into SQL statements without sufficient sanitization or parameterization. WordPress plugins typically interact with the wpdb database abstraction, but safe usage requires $wpdb->prepare() with placeholders. When string concatenation is used instead, attacker-controlled values become part of the executed query. The Patchstack advisory classifies this as a confirmed SQL injection issue resolved in UberSlider 2.6.
Exploitation requires authenticated access at a low privilege level, such as a subscriber or contributor account. Because the CVSS scope is changed, injected queries can read or modify data outside the plugin's own tables, including WordPress core tables that store user credentials, session tokens, and options. The current EPSS probability of 0.179% indicates limited observed exploitation activity, though SQL injection in publicly listed WordPress plugins typically attracts opportunistic scanning.
Root Cause
The root cause is improper neutralization of special SQL metacharacters in plugin request parameters. User input is interpolated into queries without prepared statements or strict type casting, allowing single quotes, UNION keywords, and comment sequences to break the intended query structure.
Attack Vector
The attack vector is network-based over HTTP or HTTPS to the WordPress installation. An authenticated attacker sends a crafted request to a vulnerable UberSlider endpoint, embedding SQL syntax in a parameter consumed by the plugin. The server executes the modified query against the WordPress database, returning data or triggering side effects within the response.
No verified public exploit code is available. Refer to the Patchstack WordPress Vulnerability Report for advisory details.
Detection Methods for CVE-2025-31641
Indicators of Compromise
- HTTP requests to UberSlider endpoints containing SQL metacharacters such as ', --, UNION SELECT, SLEEP(, or BENCHMARK(.
- Unusual outbound responses from wp-admin/admin-ajax.php or plugin REST routes containing database error strings.
- Spikes in slow queries or SELECT operations originating from the WordPress database user during plugin requests.
Detection Strategies
- Inspect web server access logs for authenticated sessions issuing requests to UberSlider parameters with encoded SQL payloads.
- Enable WordPress debug logging and monitor wpdb errors that correlate with low-privileged user activity.
- Deploy a web application firewall ruleset that flags SQL injection patterns targeting the uber-classic plugin paths.
Monitoring Recommendations
- Track creation of new administrator accounts or privilege changes in wp_users and wp_usermeta following plugin requests.
- Alert on database read volume anomalies tied to subscriber or contributor accounts.
- Review authentication logs for low-privileged accounts that begin issuing high-frequency plugin requests.
How to Mitigate CVE-2025-31641
Immediate Actions Required
- Upgrade UberSlider to version 2.6 or later on every affected WordPress site.
- Audit existing low-privileged WordPress accounts and disable any that are unused or suspicious.
- Rotate WordPress secrets in wp-config.php and force password resets if compromise is suspected.
Patch Information
LambertGroup addressed CVE-2025-31641 in UberSlider 2.6. Site operators should update through the WordPress plugin manager or by replacing the plugin files from the vendor-supplied package. Confirm the installed version under Plugins after upgrade.
Workarounds
- Disable and remove the UberSlider plugin until the patched version is deployed.
- Restrict registration and limit low-privileged role assignment to trusted users only.
- Place a web application firewall in front of WordPress with SQL injection signatures enabled for plugin request paths.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
