CVE-2026-0806: 
WordPress vulnerability analysis and mitigation

CVE-2026-0806 is a SQL Injection vulnerability in the WP-ClanWars plugin for WordPress, affecting all versions up to and including 2.0.1. The flaw exists in the orderby parameter due to insufficient escaping of user-supplied input and lack of proper SQL query preparation, allowing authenticated attackers with administrator-level access to append malicious SQL queries. It was published on January 24, 2026, with Wordfence as the reporting CNA. The vulnerability carries a CVSS v3.1 base score of 4.9 (Medium) (Wordfence, Red Hat CVE).

The root cause is classified as CWE-89 (Improper Neutralization of Special Elements used in an SQL Command), stemming from insufficient input escaping and the absence of parameterized queries or prepared statements in the plugin's SQL handling logic. Specifically, the vulnerable code resides in classes/teams.class.php at line 92, where the orderby parameter is incorporated directly into an SQL query without adequate sanitization (WordPress Plugin Trac). The attack vector is network-based, requiring no user interaction, but does require high privileges (administrator-level authentication). An attacker can append additional SQL clauses to the existing query to extract sensitive data from the WordPress database (Wordfence).

Successful exploitation allows an authenticated administrator to extract sensitive information from the WordPress database, including user credentials, personal data, configuration details, and other confidential records stored in the database. The impact is limited to confidentiality — integrity and availability are not directly affected based on the current CVSS assessment. While the requirement for administrator-level access limits the attack surface, a compromised admin account or a malicious administrator could leverage this vulnerability to exfiltrate the entire database contents (Wordfence, Red Hat CVE).

No public proof-of-concept exploit code or evidence of in-the-wild exploitation has been reported for CVE-2026-0806. The EPSS score is approximately 0.024% (0.000240), indicating a very low probability of exploitation in the near term. The vulnerability is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog. The requirement for administrator-level authentication significantly reduces the practical exploitability of this vulnerability (Wordfence).

1. Authentication: Log in to the WordPress site with an administrator-level account (or compromise existing admin credentials via phishing, credential stuffing, or other means).
2. Identify the vulnerable plugin: Confirm that WP-ClanWars version 2.0.1 or earlier is installed and active on the target WordPress site.
3. Locate the vulnerable parameter: Navigate to the plugin's functionality that uses the orderby parameter, which is processed in classes/teams.class.php at line 92.
4. Craft a malicious payload: Inject SQL syntax into the orderby parameter — for example, appending a UNION-based or time-based blind SQL injection payload such as 1 UNION SELECT username,password,3 FROM wp_users-- - to extract WordPress user credentials.
5. Submit the request: Send the crafted HTTP request (via browser, Burp Suite, or sqlmap) to the endpoint handling the orderby parameter.
6. Extract data: Parse the response or use time-based inference to retrieve sensitive database contents, including hashed passwords, email addresses, and other stored data (WordPress Plugin Trac, Wordfence).

• Network: Unusual HTTP requests to WP-ClanWars plugin endpoints containing SQL keywords (e.g., UNION, SELECT, FROM, --) in the orderby parameter; anomalous query strings with encoded SQL payloads.
• Logs: WordPress or web server access logs showing repeated requests to plugin pages with suspicious orderby parameter values; database error messages logged due to malformed SQL queries.
• Database: Unexpected or unauthorized database queries visible in MySQL slow query logs or general query logs referencing WP-ClanWars tables with appended SQL clauses.

Users should update the WP-ClanWars plugin to a version beyond 2.0.1 if a patched release becomes available from the plugin developer. In the interim, administrators should consider deactivating or removing the WP-ClanWars plugin entirely if it is not essential to site operations. Implementing a Web Application Firewall (WAF) such as Wordfence can help detect and block SQL injection attempts targeting this parameter. Additionally, enforcing the principle of least privilege for WordPress administrator accounts reduces the risk of exploitation (Wordfence).

The vulnerability was discovered and reported by Wordfence, which published the advisory on January 24, 2026. Coverage has been limited to automated vulnerability tracking platforms such as Vulners, VulDB, and CVEFeed, with no notable independent researcher commentary or significant social media discussion identified. The relatively low CVSS score and high privilege requirement have kept community interest minimal (Wordfence).