SQL Injection in WordPress EventON Calendar Plugin Search

The EventON - WordPress Virtual Event Calendar Plugin plugin for WordPress (full) is vulnerable to SQL Injection via the WordPress 'search' parameter in versions up to, and including, 5.0.11 due to insufficient escaping on the user supplied parameter and lack of preparation on the existing SQL query. This makes it possible for unauthenticated attackers to append additional SQL queries into already existing queries that can be used to extract sensitive information from the database, granted the "Enable additional search queries" setting is enabled and at least one published event exists.

Casky was already ahead

This CVE exploits attack patterns that Casky's 322matched skills already investigate — long before this vulnerability was disclosed. Claude's reasoning model maps these techniques to MITRE ATT&CK, so practitioners who ran these skills have already seen the threat behaviour in their findings.

Analysis

The EventON WordPress Virtual Event Calendar Plugin contains a critical SQL injection vulnerability (CVE-2026-9711, CVSS 9.8) in its search parameter functionality. Versions up to 5.0.11 fail to properly escape user-supplied input before incorporating it into database queries, allowing unauthenticated attackers to inject arbitrary SQL commands. This vulnerability is particularly dangerous because it requires no authentication, has a CVSS score indicating critical severity, and affects a plugin commonly used for event management across WordPress installations. Attackers can extract sensitive database information including user credentials, personal data, and configuration details—making this a high-priority threat for any organization running affected versions.

Casky's 322 matched skills leverage Claude AI's extended reasoning to detect the attack patterns underlying this vulnerability across MITRE ATT&CK techniques TA0001 (Initial Access) and TA0043 (Reconnaissance). Practitioners using Casky will identify suspicious patterns including: malformed search parameter payloads containing SQL syntax (UNION SELECT, OR conditions, comment sequences), abnormal database query behavior and timing variations indicating query manipulation, and attempts to extract system tables or sensitive schema information. The platform's skills map detection signatures to specific reconnaissance activities where attackers probe for injectable parameters, and initial access attempts where injected queries establish persistence or extract credentials. Security teams will see findings flagging unescaped input handling in the plugin's search functionality and recommend immediate patching to versions 5.0.12 or later, plus Web Application Firewall rules to block common SQL injection patterns in search parameters.

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Casky Risk Score

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EPSS Probability

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Shodan Exposure

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GreyNoise Signal

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Composite risk scoring from EPSS, CISA KEV, Shodan, and GreyNoise — 21 security APIs correlated into a single Casky Risk Score. Coming in Casky Pro. Join early access →

322 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-9711.

Abuse of Public-Facing API: Mobile API Abuse

mobile security · low

Run

abusing-dpapi-for-credential-access

red teaming · high

Run

abusing-shadow-credentials-for-privesc

red teaming · high

Run

MITRE ATT&CK Techniques

TA0001 TA0043

Investigate the attack patterns behind CVE-2026-9711

Casky has 322 skills that investigate the attack patterns behind CVE-2026-9711. Run one and get CVSS-scored findings in 3 minutes.

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