SQL Injection in FrontAccounting Audit Trail Report Handler

FrontAccounting before 2.4.20 contains a SQL injection vulnerability in the Audit Trail report handler that allows authenticated attackers with SA_GLANALYTIC permission to execute arbitrary SQL queries by injecting malicious code into the PARAM_2 and PARAM_3 POST parameters. Attackers can exploit time-based blind SQL injection through SLEEP() functions that are amplified across JOIN result sets to cause denial of service by exhausting database connections, or extract arbitrary database content through UNION-based injection techniques.

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

FrontAccounting versions before 2.4.20 contain a SQL injection vulnerability in the Audit Trail report functionality that allows authenticated attackers with SA_GLANALYTIC permissions to execute arbitrary SQL queries. By injecting malicious code into the PARAM_2 and PARAM_3 POST parameters, attackers can extract sensitive database content or launch denial-of-service attacks using time-based blind SQL injection techniques amplified across JOIN result sets to exhaust database connections. This vulnerability impacts organizations using FrontAccounting for financial management and reporting, particularly those relying on the Audit Trail feature for compliance and monitoring purposes.

Casky's 322 mapped security skills leverage Claude's extended reasoning to detect the attack patterns associated with MITRE techniques TA0001 (Initial Access) and TA0043 (Reconnaissance). Practitioners using the platform would observe findings related to suspicious POST parameter manipulation in Audit Trail requests, detection of SQL syntax patterns in user-controlled inputs (PARAM_2/PARAM_3), and behavioral indicators of time-based blind SQL injection such as abnormal database query latency spikes or SLEEP() function calls in database logs. The skills would flag authenticated sessions with SA_GLANALYTIC permissions executing unusual report queries, helping practitioners distinguish legitimate audit activities from exploitation attempts before database resources are exhausted.

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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-2026-40523.

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-2026-40523

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