Authenticated SQL Injection in WordPress Sliced Invoices

WordPress Sliced Invoices 3.8.2 contains an authenticated SQL injection vulnerability that allows authenticated attackers to manipulate database queries by injecting SQL code through the 'post' parameter. Attackers can send requests to the admin.php endpoint with action=duplicate_quote_invoice and malicious 'post' values to extract sensitive database information or modify data.

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

WordPress Sliced Invoices version 3.8.2 contains an authenticated SQL injection vulnerability (CWE-89) that allows logged-in attackers to manipulate database queries through the 'post' parameter. When sending requests to the admin.php endpoint with action=duplicate_quote_invoice, attackers can inject arbitrary SQL code to extract sensitive data, modify records, or potentially escalate privileges. While this requires authentication, it significantly impacts organizations using this invoicing plugin, as compromised user accounts—whether through phishing, credential theft, or insider threats—become a direct pathway to database compromise. The high CVSS score of 7.1 reflects the severity of unrestricted database access in a financial/administrative context.

Casky's 301 mapped skills leverage Claude AI's extended reasoning to detect the attack patterns underlying this vulnerability across the MITRE ATT&CK framework. Practitioners will observe detections aligned with TA0001 (Reconnaissance) techniques as attackers probe the admin.php endpoint and parameter handling, followed by TA0043 (Resource Development) patterns as they craft and refine SQL injection payloads. Within a security investigation, Casky's skills would flag suspicious POST requests containing SQL metacharacters (UNION, SELECT, WHERE clauses) sent to the duplicate_quote_invoice action, anomalous database query patterns in application logs, and unauthorized access to invoice or financial tables. Practitioners would also see correlations between user authentication events and subsequent database exfiltration attempts, enabling rapid identification of compromised accounts and the scope of data exposure before widespread damage occurs.

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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-2019-25746.

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-2019-25746

Casky has 301 skills that investigate the attack patterns behind CVE-2019-25746. Run one and get CVSS-scored findings in 3 minutes.

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