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CVE-2026-66706— WordPress Subscribe to Comments plugin <= 2.3.1 - Cross Site Scripting (XSS) vulnerability

Quick assessment

Affected
Mark Jaquith Subscribe to Comments
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.

WordPress Subscribe to Comments是WordPress基金会开源的一款评论订阅功能的插件。 WordPress Subscribe to Comments 2.3.1及之前版本存在跨站脚本漏洞，该漏洞源于容易受到跨站脚本攻击。

CVSS 5.9 · Medium EPSS 0.24% · P14

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
Mark Jaquith Subscribe to Comments n/a≤ 2.3.1 affected
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I. Basic Information for CVE-2026-66706

Vulnerability Information
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Vulnerability Title
WordPress Subscribe to Comments plugin <= 2.3.1 - Cross Site Scripting (XSS) vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Author Cross Site Scripting (XSS) in Subscribe to Comments <= 2.3.1 versions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/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
WordPress Subscribe to Comments 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Subscribe to Comments是WordPress基金会开源的一款评论订阅功能的插件。 WordPress Subscribe to Comments 2.3.1及之前版本存在跨站脚本漏洞，该漏洞源于容易受到跨站脚本攻击。
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
Mark Jaquith Subscribe to Comments n/a ~ 2.3.1 -

II. Public POCs for CVE-2026-66706

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III. Intelligence Information for CVE-2026-66706

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Vendor Advisories for CVE-2026-66706 (1)

IV. Related Vulnerabilities

Same product: Subscribe to Comments
Same weakness: CWE-79

V. Comments for CVE-2026-66706

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