Unauthenticated SQL Injection in Xstore WordPress Theme

The Xstore WordPress theme before 9.7.3 does not properly sanitise and escape a parameter before using it in a SQL statement via an AJAX action available to unauthenticated users, leading to a SQL injection

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

The Xstore WordPress theme versions prior to 9.7.3 contain a critical SQL injection vulnerability (CWE-89) in an AJAX action that fails to properly sanitize user-supplied parameters before incorporating them into SQL queries. What makes this particularly severe is that the vulnerable endpoint is accessible to unauthenticated users, meaning attackers require no WordPress credentials to exploit it. This vulnerability affects any website running the affected Xstore theme version, potentially exposing sensitive database contents including user credentials, customer data, and confidential business information. The CVSS score of 8.6 reflects the high severity, as attackers can read, modify, or delete database records without authorization.

Casky's security skill mapping identifies this attack through the MITRE ATT&CK techniques TA0001 (Initial Access) and TA0043 (Reconnaissance), correlating with 301 relevant skills powered by Claude's extended reasoning capabilities. Practitioners using Casky would observe detection patterns flagging suspicious AJAX requests with SQL metacharacters in parameters, unusual database query patterns deviating from legitimate theme functionality, and unauthorized data exfiltration attempts. The platform's skill coverage enables practitioners to recognize exploitation signatures such as UNION-based injection payloads, time-based blind SQL injection timing anomalies, and error-based injection patterns that reveal database structure. By mapping these observable behaviors to MITRE techniques, Casky helps security teams distinguish legitimate WordPress traffic from exploitation attempts and prioritize remediation of unpatched Xstore installations.

Live Threat IntelligenceComing soon

Casky Risk Score

—

EPSS Probability

—

Shodan Exposure

—

GreyNoise Signal

—

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-2026-3326.

analyzing-apt-group-with-mitre-navigator

threat intelligence · low

Run

analyzing-campaign-attribution-evidence

threat intelligence · low

Run

analyzing-certificate-transparency-for-phishing

threat intelligence · low

Run

MITRE ATT&CK Techniques

TA0001 TA0043

Investigate the attack patterns behind CVE-2026-3326

Casky has 301 skills that investigate the attack patterns behind CVE-2026-3326. Run one and get CVSS-scored findings in 3 minutes.

Run the skill that detects this →

X Instagram LinkedIn