ChestnutCMS SQL Injection via Template Content Parameter

ChestnutCMS v1.5.10 has a SQL injection vulnerability. The content parameter of the cms_content tag can be manipulated in the admin backend and injected into a SQL query when the template is rendered.

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

ChestnutCMS v1.5.10 contains a critical SQL injection vulnerability (CVSS 9.8) in its template rendering engine. The cms_content tag fails to properly sanitize the content parameter before incorporating it into SQL queries during template processing. This allows authenticated admin users—or attackers who have gained admin access—to inject arbitrary SQL commands, potentially leading to unauthorized data access, modification, or deletion of the entire CMS database. Organizations running ChestnutCMS v1.5.10 and earlier versions are immediately affected, with particular risk to those exposing their admin backend to untrusted network segments.

Casky's 301 matching security skills leverage Claude's extended reasoning to detect the attack patterns underlying this vulnerability across MITRE ATT&CK techniques TA0001 (Reconnaissance) and TA0043 (Resource Development). Practitioners using Casky would observe detections for suspicious SQL syntax patterns in cms_content parameters, anomalous database query structures during template rendering, and evidence of data exfiltration attempts. The platform's skill mappings would highlight both initial reconnaissance activities—such as parameter fuzzing and template structure probing—and adversary infrastructure development patterns. Practitioners would see correlated findings showing how attackers transition from discovery of the cms_content parameter to exploitation attempts, enabling faster incident response and threat hunting within their ChestnutCMS deployments.

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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-2026-36458.

analyzing-apt-group-with-mitre-navigator

threat intelligence · low

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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

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Casky has 301 skills that investigate the attack patterns behind CVE-2026-36458. Run one and get CVSS-scored findings in 3 minutes.

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