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CVE-2026-91829— Subscribe to Comments < 2.3.3 - Reflected XSS via 'ref' Parameter

Quick assessment

Affected
Unknown 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 插件“Subscribe to Comments”在 2.3.3 版本之前，未对参数进行充分验证就将其反射到链接目标中，导致未认证的攻击者可以通过构造恶意 URL 实施反射型跨站脚本攻击（Reflected XSS），任何点击该链接的用户（包括管理员）均可能受到攻击。

AI Predicted 5.4 Difficulty: Easy EPSS 0.16% · P5

Affected Version Matrix 1

VendorProduct Version RangeStatus
Unknown Subscribe to Comments < 2.3.3 affected
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I. Basic Information for CVE-2026-91829

Vulnerability Information
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Vulnerability Title
Subscribe to Comments < 2.3.3 - Reflected XSS via 'ref' Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
The Subscribe to Comments WordPress plugin before 2.3.3 does not properly validate a parameter before reflecting it into a link target, allowing unauthenticated attackers to perform Reflected Cross-Site Scripting via a crafted URL against anyone who clicks it, including administrators.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Unknown Subscribe to Comments 0 ~ 2.3.3 -

II. Public POCs for CVE-2026-91829

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III. Intelligence Information for CVE-2026-91829

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Same Patch Batch · Unknown · 2026-10-11 · 63 CVEs total

CVE-2026-84251 click5 CRM add-on to Ninja Forms <= 1.0.1 - Unauthenticated Arbitrary Options Update
CVE-2026-104680 Envira Gallery < 1.16.2 - Multisite Subsite Admin+ Arbitrary Plugin Installation via Onboa
CVE-2026-104681 Envira Gallery < 1.16.2 - Author+ Non-Public Post Title and Excerpt Disclosure via Gallery
CVE-2026-104682 Envira Gallery < 1.16.2 - Contributor Missing Authorization via Convert Gallery REST Route
CVE-2026-104028 Anton Extensions <= 1.2.2 - Unauthenticated Arbitrary File Upload to RCE
CVE-2026-81649 Fundiin <= 3.4.0 - Unauthenticated Payment Gateway Settings Update and Credential Disclosu
CVE-2026-81155 Robo Gallery < 5.2.6 - Author+ Stored XSS via Gallery Search Label
CVE-2026-81154 Robo Gallery < 5.2.6 - Author+ Stored XSS via Image Alt Text
CVE-2026-81420 Tcard WP <= 1.8.0 - Unauthenticated SQLi via group_id Parameter
CVE-2026-81156 Robo Gallery < 5.2.6 - Contributor+ Stored XSS via Gallery Settings
CVE-2026-14854 WooCommerce Bookings < 3.11.0 - Unauthenticated Denial of Service
CVE-2026-84252 click5 CRM add-on to WPForms <= 1.0.3 - Unauthenticated Arbitrary Options Update
CVE-2026-84260 click5 CRM add-on to Gravity Forms <= 1.0.3 - Unauthenticated Stored XSS via post_notifica
CVE-2026-84259 click5 CRM add-on to WPForms <= 1.0.3 - Unauthenticated Stored XSS via post_notifications
CVE-2026-84253 click5 CRM add-on to Gravity Forms <= 1.0.3 - Unauthenticated Arbitrary Options Update
CVE-2026-84261 click5 CRM add-on to Contact Form 7 <= 1.0.4 - Unauthenticated Stored XSS via post_notific
CVE-2026-84254 click5 CRM add-on to Contact Form 7 <= 1.0.4 - Unauthenticated Arbitrary Options Update
CVE-2026-84258 click5 CRM add-on to Ninja Forms <= 1.0.1 - Unauthenticated Stored XSS via post_notificati
CVE-2026-84737 Freeton WP <= 1.0.0 - Unauthenticated Account Takeover via 'secod' Parameter
CVE-2026-84734 Mindstien Quick Login <= 1.0 - Unauthenticated Administrator Account Takeover via 'mql_pas

Showing top 20 of 63 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Subscribe to Comments
Same vendor: Unknown

V. Comments for CVE-2026-91829

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