SQL Injection in Osclass Item Model Handler

A weakness has been identified in Osclass up to 8.3.1. Affected by this vulnerability is the function Item::findUserItems of the file oc-includes/osclass/model/Item.php of the component Item Model Handler. This manipulation of the argument sPattern causes sql injection. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Casky was already ahead

This CVE exploits attack patterns that Casky's 323matched 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

Osclass versions up to 8.3.1 contain a critical SQL injection vulnerability in the Item::findUserItems function within the Item Model Handler component. The flaw exists in the sPattern argument, which fails to properly sanitize user-supplied input before incorporating it into SQL queries. This allows attackers to inject arbitrary SQL commands, potentially enabling unauthorized data extraction, modification, or deletion from the underlying database. Given that Osclass is a widely-used open-source classified listings platform, this vulnerability affects numerous website operators and their users' sensitive information, including listings, user credentials, and personal data. The public availability of exploit code significantly increases attack likelihood.

Casky's 323 mapped security skills leverage Claude AI's extended reasoning to detect the attack patterns associated with CWE-74 (Improper Neutralization of Special Elements in Output) and CWE-89 (SQL Injection) across reconnaissance (TA0001) and exfiltration (TA0043) phases. Practitioners using Casky would identify suspicious patterns including: malformed sPattern parameter values containing SQL syntax keywords (UNION, SELECT, OR 1=1), unusual database query timing anomalies, and anomalous data access patterns targeting user credential and listing tables. The platform's skill mapping would surface indicators of both initial exploitation attempts and post-compromise data exfiltration activities, enabling defenders to correlate reconnaissance probing with actual breach activity and respond before sensitive data reaches threat actors.

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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 →

323 Casky skills cover this attack pattern

These skills use Claude AI's reasoning model to surface findings in the same attack categories as CVE-2026-113381.

Abuse of Public-Facing API: Mobile API Abuse

mobile security · low

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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-2026-113381

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