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Vulnerability record · CVE-2021-24131 · published 18 March 2021

CVE-2021-24131: Cleantalk anti-spam sql injection vulnerability

Cleantalk · Anti Spam

Unvalidated input in the Anti-Spam by CleanTalk WordPress plugin, versions before 5.149, lead to multiple authenticated SQL injection vulnerabilities, however, it requires high privilege user (admin+).

7.2 CVSS 3.1 High EPSS 1.4% · top 27.8% CWE-89 · SQL injection
7.2CVSS 3.1 base score, v2 6.5
1.4%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

Unvalidated input in the Anti-Spam by CleanTalk WordPress plugin, versions before 5.149, lead to multiple authenticated SQL injection vulnerabilities, however, it requires high privilege user (admin+).

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://wpscan.com/vulnerability/1bc28021-28c0-43fa-b89e-6b93c345e5d8 ExploitThird Party Advisory
https://wpscan.com/vulnerability/1bc28021-28c0-43fa-b89e-6b93c345e5d8 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.8CVE-2023-51696Cleantalk anti-spam cross-site request forgery vulnerabilityCross-Site Request Forgery (CSRF) vulnerability in СleanTalk - Anti-Spam Protection Spam protection, Anti-Spam, FireWall by CleanTalk.This issue affe…EPSS 0.24%7.5CVE-2024-10542Cleantalk anti-spam missing authorization vulnerabilityThe Spam protection, Anti-Spam, FireWall by CleanTalk plugin for WordPress is vulnerable to unauthorized Arbitrary Plugin Installation due to an auth…EPSS 15%6.1CVE-2026-10770Cleantalk anti-spam cross-site scripting vulnerabilityImproper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Anti-Spam by CleanTalk allows Reflected …EPSS 0.26%4.7CVE-2026-3213Cleantalk anti-spam cross-site scripting vulnerabilityImproper Neutralization of Input During Web Page Generation ("Cross-site Scripting") vulnerability in Drupal Anti-Spam by CleanTalk allows Cross-Site…EPSS 0.21%9.8CVE-2026-76461Cisco AsyncOS email parsing SQL injection allows root command executionCisco AsyncOS Software for Cisco Secure Email Gateway fails to properly validate email parsing input, allowing crafted email messages containing mali…KEVEPSS 28%analysed9.3CVE-2026-9586Sangoma Switchvox unauthenticated SQL injection in /pa endpointSangoma Switchvox SMB Edition 8.3 (104997) fails to sanitize the PhoneIP value from XML content beginning with <PolycomIPPhone> before concatenating …KEVEPSS 19%analysed10.0CVE-2026-72898Metabase unauthenticated SQL injection in reset_password endpointMetabase exposes a database endpoint, '/reset_password', that fails to neutralize attacker-supplied SQL, allowing arbitrary SQL injection. Because th…KEVEPSS 19%analysed5.9CVE-2026-60137WordPress WP_Query author__not_in SQL injectionWordPress core fails to properly sanitise the author__not_in parameter of WP_Query in versions before 6.8.6, 6.9.5 and 7.0.2, allowing SQL injection …KEVEPSS 5.9%analysed

Source: NIST National Vulnerability Database (record CVE-2021-24131), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.