CVE-2026-66593
Deferred Deferred - Pending Action

Unauthenticated SQL Injection in CleanTalk Security Malware Scan

Publication date: 2026-08-20

Last updated on: 2026-08-20

Assigner: Patchstack

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

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Meta Information

Published
2026-08-20
Last Modified
2026-08-20
Generated
2026-08-20
AI Q&A
2026-08-20
EPSS Evaluated
N/A
NVD
CVE-2026-66593
EUVD
EUVD-2026-63336

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
cleantalk security_and_malware_scan to 2.184 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-89 The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.

Attack-Flow Graph

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Executive Summary

CVE-2026-66593 is an unauthenticated SQL Injection vulnerability in the Security & Malware scan by CleanTalk WordPress plugin versions 2.184 or earlier. This flaw allows attackers to directly interact with the website's database without authentication, potentially accessing or manipulating sensitive data.

Detection Guidance

To detect this vulnerability, check if your WordPress site uses the Security & Malware scan by CleanTalk plugin version 2.184 or earlier. Inspect plugin files for suspicious SQL query patterns or unauthorized database access attempts. Monitor web server logs for unusual queries or errors related to SQL syntax.

Impact Analysis

This vulnerability can lead to unauthorized access to sensitive information stored in the database, such as user credentials, personal data, or financial details. Attackers could also modify or delete database contents, disrupt website functionality, or use the site for further attacks.

Compliance Impact

This vulnerability could result in non-compliance with GDPR, HIPAA, or other data protection regulations due to unauthorized data access or breaches. Organizations may face legal penalties, reputational damage, and mandatory breach notifications if exploited.

Mitigation Strategies

Immediately update the Security & Malware scan by CleanTalk plugin to version 2.185 or later. If updating is not possible, apply Patchstack's mitigation rule to block attacks until the update is applied. Contact your hosting provider or web developer for assistance if needed.

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