Spam protection, AntiSpam, FireWall by CleanTalk vulnerabilities

Known security issues in the Spam protection, AntiSpam, FireWall by CleanTalk WordPress plugin, by affected version, with severity, CVE and the version that fixes each one.

Plugin slug: cleantalk-spam-protect
Latest version: 6.90
Active installs: 200,000+
Known vulnerabilities: 21
Data updated: 2026-10-17 08:40 UTC

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This information comes from public vulnerability databases and may be incomplete or out of date. A plugin with no known vulnerabilities is not proof that it is secure; keep plugins updated and remove the ones you do not use.

Fixed in version 6.89 (1)

Spam protection, AntiSpam, FireWall by CleanTalk: Fixed in version 6.89
Vulnerability	Severity	CVSS	Affected versions	Published
Anti-Spam by CleanTalk <= 6.88 - Unauthenticated Stored Cross-Site Scripting via Comment Content via ContactsEncoder Greedy Regex CVE-2026-103424 · Source	Medium	5.4	< 6.89	2026-09-07

Fixed in version 6.87 (2)

Spam protection, AntiSpam, FireWall by CleanTalk: Fixed in version 6.87
Vulnerability	Severity	CVSS	Affected versions	Published
Spam protection, Honeypot, Anti-Spam by CleanTalk <= 6.86 - Unauthenticated Stored Cross-Site Scripting via Comment Content aria-label Placeholder CVE-2026-77830 · Source	High	7.2	< 6.87	2026-07-27
Spam protection, Honeypot, Anti-Spam by CleanTalk < 6.87 - Unauthenticated Arbitrary Shortcode Execution CVE-2026-19855 · Source	Medium	6.5	< 6.87	2026-09-04

Fixed in version 6.83 (1)

Spam protection, AntiSpam, FireWall by CleanTalk: Fixed in version 6.83
Vulnerability	Severity	CVSS	Affected versions	Published
Spam protection, AntiSpam, FireWall by CleanTalk <= 6.82 - Unauthenticated Stored Cross-Site Scripting CVE-2026-65437 · Source	High	7.1	< 6.83	2026-06-11

Fixed in version 6.79 (1)

Spam protection, AntiSpam, FireWall by CleanTalk: Fixed in version 6.79
Vulnerability	Severity	CVSS	Affected versions	Published
WordPress Spam protection, AntiSpam, FireWall by CleanTalk Plugin < 6.79 is vulnerable to a medium priority Cross Site Scripting (XSS) CVE-2026-8071 · Source	Not rated	-	< 6.79	2026-06-10

Fixed in version 6.72 (1)

Spam protection, AntiSpam, FireWall by CleanTalk: Fixed in version 6.72
Vulnerability	Severity	CVSS	Affected versions	Published
Spam protection, Honeypot, Anti-Spam by CleanTalk <= 6.71 - Authorization Bypass via Reverse DNS (PTR record) Spoofing to Unauthenticated Arbitrary Plugin Installation CVE-2026-1490 · Source	Critical	9.8	< 6.72	0000-00-00

Fixed in version 6.45 (1)

Spam protection, AntiSpam, FireWall by CleanTalk: Fixed in version 6.45
Vulnerability	Severity	CVSS	Affected versions	Published
Spam protection, Anti-Spam, FireWall by CleanTalk <= 6.44 - Authorization Bypass due to Missing Empty Value Check to Unauthenticated Arbitrary Plugin Installation CVE-2024-10781 · Source	High	8.1	< 6.45	2024-11-25

Fixed in version 6.44 (1)

Spam protection, AntiSpam, FireWall by CleanTalk: Fixed in version 6.44
Vulnerability	Severity	CVSS	Affected versions	Published
Spam protection, Anti-Spam, FireWall by CleanTalk <= 6.43.2 - Authorization Bypass via Reverse DNS Spoofing to Unauthenticated Arbitrary Plugin Installation CVE-2024-10542 · Source	Critical	9.8	< 6.44	2024-11-25

Fixed in version 6.21 (2)

Spam protection, AntiSpam, FireWall by CleanTalk: Fixed in version 6.21
Vulnerability	Severity	CVSS	Affected versions	Published
WordPress Spam protection, AntiSpam, FireWall by CleanTalk Plugin <= 6.20 is vulnerable to Cross Site Request Forgery (CSRF) CVE-2023-51696 · Source	Medium	4.3	< 6.21	2023-12-27
WordPress Spam protection, AntiSpam, FireWall by CleanTalk Plugin <= 6.20 is vulnerable to Cross Site Request Forgery (CSRF) CVE-2023-51535 · Source	Medium	4.3	< 6.21	2023-12-27

Fixed in version 6.11 (1)

Spam protection, AntiSpam, FireWall by CleanTalk: Fixed in version 6.11
Vulnerability	Severity	CVSS	Affected versions	Published
WordPress Spam protection, AntiSpam, FireWall by CleanTalk Plugin <= 6.10 is vulnerable to Broken Access Control CVE-2023-33996 · Source	High	8.8	< 6.11	2023-06-22

Fixed in version 5.185.1 (1)

Spam protection, AntiSpam, FireWall by CleanTalk: Fixed in version 5.185.1
Vulnerability	Severity	CVSS	Affected versions	Published
WordPress AntiSpam by CleanTalk plugin <= 5.185 - Authenticated SQL Injection (SQLi) vulnerability CVE-2022-3302 · Source	High	7.2	< 5.185.1	2022-10-03

Fixed in version 5.174.1 (2)

Spam protection, AntiSpam, FireWall by CleanTalk: Fixed in version 5.174.1
Vulnerability	Severity	CVSS	Affected versions	Published
WordPress Spam protection, AntiSpam, FireWall by CleanTalk plugin <= 5.174 - Reflected Cross-Site Scripting (XSS) vulnerability CVE-2022-28222 · Source	Medium	6.1	< 5.174.1	2022-03-30
WordPress Spam protection, AntiSpam, FireWall by CleanTalk plugin <= 5.174 - Reflected Cross-Site Scripting (XSS) vulnerability CVE-2022-28221 · Source	Medium	6.1	< 5.174.1	2022-03-30

Fixed in version 5.153.4 (1)

Spam protection, AntiSpam, FireWall by CleanTalk: Fixed in version 5.153.4
Vulnerability	Severity	CVSS	Affected versions	Published
WordPress Spam protection, AntiSpam, FireWall by CleanTalk plugin <= 5.153.3 - Unauthenticated Time-Based Blind SQL Injection (SQLi) vulnerability CVE-2021-24295 · Source	High	7.5	< 5.153.4	2021-03-05

Fixed in version 5.149 (2)

Spam protection, AntiSpam, FireWall by CleanTalk: Fixed in version 5.149
Vulnerability	Severity	CVSS	Affected versions	Published
Anti-Spam by CleanTalk < 5.149 - Multiple Authenticated SQL Injections CVE-2021-24131 · Source	High	7.2	< 5.149	2020-11-20
WordPress Anti-Spam by CleanTalk plugin <= 5.148 - Multiple Authenticated SQL Injection (SQLi) vulnerabilities No CVE assigned · Source	Not rated	-	< 5.149	2020-11-20

Fixed in version 5.127.4 (1)

Spam protection, AntiSpam, FireWall by CleanTalk: Fixed in version 5.127.4
Vulnerability	Severity	CVSS	Affected versions	Published
WordPress Spam protection, AntiSpam, FireWall by CleanTalk plugin <=5.127.3 - Cross-Site Scripting (XSS) vulnerability CVE-2019-17515 · Source	Medium	6.1	< 5.127.4	2019-11-12

Fixed in version 5.22 (3)

Spam protection, AntiSpam, FireWall by CleanTalk: Fixed in version 5.22
Vulnerability	Severity	CVSS	Affected versions	Published
WordPress Spam Protection Plugin <= 5.21 - Cross Site Scripting No CVE assigned · Source	Not rated	-	< 5.22	2015-08-25
Spam protection, AntiSpam, FireWall by CleanTalk < 5.22 - Reflected Cross-Site Scripting No CVE assigned · Source	Not rated	-	< 5.22	2015-08-25
Anti-Spam by CleanTalk < 5.22 - Unauthenticated Reflected Cross-Site Scripting (XSS) No CVE assigned · Source	Not rated	-	< 5.22	-

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Sources and attribution

Vulnerability data from WPVulnerability (WordPress, plugins, themes and server software). WPVulnerability data license.
CVE records are copyright The MITRE Corporation. CVE Terms of Use.
Known-exploited status from the CISA Known Exploited Vulnerabilities catalog. Public domain (U.S. Government work).
Plugin names, latest versions and install counts from the WordPress.org plugin directory. WordPress is a trademark of the WordPress Foundation; Webforta is not affiliated with or endorsed by WordPress.org, WPVulnerability or the sources above.