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2 vulnerabilities found for CleanTalk Anti-Spam – Complete Spam Protection by cleantalk
CVE-2026-109198 (GCVE-0-2026-109198)
Vulnerability from nvd – Published: 2026-10-23 04:31 – Updated: 2026-10-23 10:56
VLAI
EPSS
VEX
Title
Anti-Spam by CleanTalk <= 6.89.1 - Unauthenticated Stored Cross-Site Scripting via 'user_email' Registration Parameter
Summary
The Anti-Spam by CleanTalk – Spam Protection Without CAPTCHA plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'user_email' parameter in all versions up to, and including, 6.89.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Successful exploitation requires user registration to be open on the site, and script execution is triggered when an Administrator subsequently runs the plugin's user-spam scan and views the resulting Non-checkable users or Spam users tab — the plugin's own documented workflow.
Severity
7.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-23 10:41 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| cleantalk | CleanTalk Anti-Spam – Complete Spam Protection |
Affected:
0 , ≤ 6.89.1
(semver)
|
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}
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},
{
"url": "https://plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/6.89.1/lib/Cleantalk/ApbctWP/FindSpam/ListTable/BadUsers.php#L87"
},
{
"url": "https://plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/6.89.1/lib/Cleantalk/ApbctWP/FindSpam/ListTable/Users.php#L113"
},
{
"url": "https://plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/6.89.1/lib/Cleantalk/ApbctWP/FindSpam/UsersChecker.php#L182"
},
{
"url": "https://plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/6.89.1/inc/cleantalk-public-integrations.php#L882"
},
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CVE-2026-109198 (GCVE-0-2026-109198)
Vulnerability from cvelistv5 – Published: 2026-10-23 04:31 – Updated: 2026-10-23 10:56
VLAI
EPSS
VEX
Title
Anti-Spam by CleanTalk <= 6.89.1 - Unauthenticated Stored Cross-Site Scripting via 'user_email' Registration Parameter
Summary
The Anti-Spam by CleanTalk – Spam Protection Without CAPTCHA plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'user_email' parameter in all versions up to, and including, 6.89.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Successful exploitation requires user registration to be open on the site, and script execution is triggered when an Administrator subsequently runs the plugin's user-spam scan and views the resulting Non-checkable users or Spam users tab — the plugin's own documented workflow.
Severity
7.2 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-23 10:41 UTC
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
6 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| cleantalk | CleanTalk Anti-Spam – Complete Spam Protection |
Affected:
0 , ≤ 6.89.1
(semver)
|
{
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"adp": [
{
"metrics": [
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},
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},
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"Technical Impact": "partial"
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],
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"timestamp": "2026-10-23T10:41:09.885580Z",
"version": "2.0.3"
},
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
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}
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}
],
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},
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},
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"url": "https://plugins.trac.wordpress.org/browser/cleantalk-spam-protect/tags/6.89.1/lib/Cleantalk/ApbctWP/FindSpam/UsersChecker.php#L182"
},
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},
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