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CVE-2026-65437— WordPress Spam protection, AntiSpam, FireWall by CleanTalk plugin <= 6.82 - Cross Site Scripting (XSS) vulnerability

Quick assessment

Affected
CleanTalk Inc Spam protection, AntiSpam, FireWall by CleanTalk
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

cleantalk antispam是cleantalk公司开源的一款评论和表单垃圾防护插件。 CleanTalk AntiSpam 6.82及之前版本存在跨站脚本漏洞，该漏洞源于未经身份验证的跨站脚本。

CVSS 7.1 · High EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise

Affected Version Matrix 1

VendorProduct Version RangeStatus
CleanTalk Inc Spam protection, AntiSpam, FireWall by CleanTalk n/a≤ 6.82 affected
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I. Basic Information for CVE-2026-65437

Vulnerability Information
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Vulnerability Title
WordPress Spam protection, AntiSpam, FireWall by CleanTalk plugin <= 6.82 - Cross Site Scripting (XSS) vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Unauthenticated Cross Site Scripting (XSS) in Spam protection, AntiSpam, FireWall by CleanTalk <= 6.82 versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
CleanTalk AntiSpam 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
cleantalk antispam是cleantalk公司开源的一款评论和表单垃圾防护插件。 CleanTalk AntiSpam 6.82及之前版本存在跨站脚本漏洞，该漏洞源于未经身份验证的跨站脚本。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
CleanTalk Inc Spam protection, AntiSpam, FireWall by CleanTalk n/a ~ 6.82 -

II. Public POCs for CVE-2026-65437

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III. Intelligence Information for CVE-2026-65437

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Vendor Advisories for CVE-2026-65437 (1)

IV. Related Vulnerabilities

Same product: Spam protection, AntiSpam, FireWall by CleanTalk
Same vendor: CleanTalk Inc
Same weakness: CWE-79

V. Comments for CVE-2026-65437

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