SQL Injection in WordPress Plugin Signup Parameter

Wow Viral Signups 2.1 WordPress plugin contains an SQL injection vulnerability that allows unauthenticated attackers to extract database information by exploiting the unescaped 'idsignup' POST parameter. Attackers can send crafted requests to the admin-ajax.php endpoint with malicious SQL payloads in the 'idsignup' parameter to read arbitrary data from the database.

Casky was already ahead

This CVE exploits attack patterns that Casky's 301matched 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

Wow Viral Signups 2.1 WordPress plugin contains a critical SQL injection vulnerability in the 'idsignup' POST parameter that allows unauthenticated attackers to extract sensitive database information. The vulnerability exists because user-supplied input is not properly escaped before being used in SQL queries, enabling attackers to manipulate database queries through the admin-ajax.php endpoint. This affects any WordPress installation running the vulnerable plugin version, potentially exposing customer data, user credentials, and other sensitive information stored in the WordPress database. With a CVSS score of 8.2, this is classified as a high-severity vulnerability that requires immediate patching.

Casky's 301 matching skills leverage Claude AI's extended reasoning to detect the attack patterns associated with this vulnerability by analyzing indicators aligned with MITRE ATT&CK techniques TA0001 (Initial Access) and TA0043 (Reconnaissance). Practitioners using Casky would identify detection patterns including: anomalous POST requests to admin-ajax.php containing SQL syntax characters (UNION, SELECT, WHERE clauses) in the 'idsignup' parameter, unusual database query patterns that deviate from legitimate signup workflows, and suspicious data exfiltration attempts targeting wp_users or wp_options tables. The platform's skill mapping enables security teams to correlate raw HTTP traffic and database logs with known exploitation techniques, surfacing evidence of both active exploitation attempts and post-compromise data extraction activities before attackers establish persistence in the WordPress environment.

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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 →

301 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2017-20245.

analyzing-apt-group-with-mitre-navigator

threat intelligence · low

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analyzing-campaign-attribution-evidence

threat intelligence · low

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analyzing-certificate-transparency-for-phishing

threat intelligence · low

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MITRE ATT&CK Techniques

TA0001 TA0043

Investigate the attack patterns behind CVE-2017-20245

Casky has 301 skills that investigate the attack patterns behind CVE-2017-20245. Run one and get CVSS-scored findings in 3 minutes.

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