Unauthenticated SQL Injection in CleanTalk Security Scanner

Unauthenticated SQL Injection in Security & Malware scan by CleanTalk <= 2.184 versions.

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

CVE-2026-66593 represents a critical SQL injection vulnerability (CWE-89) in CleanTalk's security and malware scanning plugin affecting versions 2.184 and earlier. This unauthenticated flaw allows attackers to bypass authentication entirely and directly manipulate database queries, potentially exposing sensitive user data, WordPress credentials, and site configuration. WordPress site administrators using CleanTalk are immediately at risk, as the vulnerability requires no prior access or credentials—making it a high-impact threat with a 9.3 CVSS score. The attack surface is particularly dangerous because security scanning plugins are trusted to protect sites, making this a supply-chain-style compromise vector.

Casky's 322 mapped security skills leverage Claude AI's extended reasoning to identify the reconnaissance and exploitation patterns behind this vulnerability across MITRE ATT&CK's Initial Access (TA0001) and Resource Development (TA0043) techniques. Practitioners using Casky would detect malicious SQL injection payloads in HTTP requests targeting CleanTalk endpoints, recognize authentication-bypass attempts (a hallmark of TA0001), and observe database enumeration queries characteristic of post-exploitation reconnaissance. Claude's reasoning engine correlates these attack signals—unauthenticated requests containing SQL syntax, timing-based inference patterns, and error-based injection indicators—against the vulnerability's specific exploitation chain, allowing security teams to identify both active exploitation attempts and historical compromise indicators in their logs before CISA adds this to the Known Exploited Vulnerabilities catalog.

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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-2026-66593.

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-2026-66593

Casky has 322 skills that investigate the attack patterns behind CVE-2026-66593. Run one and get CVSS-scored findings in 3 minutes.

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