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CVE-2026-22216— wpDiscuz before 7.6.47 - No Rate Limiting on Subscription Endpoints with LIKE Wildcard Bypass

Quick assessment

Affected
gVectors wpDiscuz
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和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin wpDiscuz 7.6.47之前版本存在安全漏洞，该漏洞源于缺少速率限制，可能导致订阅任意电子邮件地址。

CVSS 6.5 · Medium EPSS 0.32% · P23

Possible ATT&CK Techniques 1 AI

T1537 · Transfer Data to Cloud Account
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I. Basic Information for CVE-2026-22216

Vulnerability Information
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Vulnerability Title
wpDiscuz before 7.6.47 - No Rate Limiting on Subscription Endpoints with LIKE Wildcard Bypass
Source: CVE Program / CVE List V5
Vulnerability Description
wpDiscuz before 7.6.47 contains a missing rate limiting vulnerability that allows unauthenticated attackers to subscribe arbitrary email addresses to post notifications by sending POST requests to the wpdAddSubscription handler in class.WpdiscuzHelperAjax.php. Attackers can exploit LIKE wildcard characters in the subscription query to match multiple email addresses and generate unwanted notification emails to victim accounts.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
交互频率的控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress plugin wpDiscuz 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台具有在基于PHP和MySQL的服务器上架设个人博客网站的功能。WordPress plugin是一个应用插件。 WordPress plugin wpDiscuz 7.6.47之前版本存在安全漏洞，该漏洞源于缺少速率限制，可能导致订阅任意电子邮件地址。
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
gVectors wpDiscuz 0 ~ 7.6.47 -

II. Public POCs for CVE-2026-22216

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III. Intelligence Information for CVE-2026-22216

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Vendor Pages for CVE-2026-22216 (2)

Same Patch Batch · gVectors · 2026-03-13 · 11 CVEs total

CVE-2026-22193 8.1 HIGH wpDiscuz before 7.6.47 - SQL Injection in getAllSubscriptions()
CVE-2026-22202 8.1 HIGH wpDiscuz before 7.6.47 - Destructive GET Action Deletes All Comments by Email
CVE-2026-22182 7.5 HIGH wpDiscuz before 7.6.47 - Unauthenticated Email Notification Flood via wpdCheckNotification
CVE-2026-22183 6.1 MEDIUM wpDiscuz before 7.6.47 - Stored Cross-Site Scripting in Inline Comment Preview
CVE-2026-22209 5.5 MEDIUM wpDiscuz before 7.6.47 - Cross-Site Scripting via Unescaped Custom CSS in Style Tag
CVE-2026-22201 5.3 MEDIUM wpDiscuz before 7.6.47 - IP Address Spoofing in getIP()
CVE-2026-22203 4.9 MEDIUM wpDiscuz before 7.6.47 - Options Export Leaks OAuth Secrets in Plaintext
CVE-2026-22210 4.4 MEDIUM wpDiscuz before 7.6.47 - Cross-Site Scripting via Unescaped Attachment URLs
CVE-2026-22215 4.3 MEDIUM wpDiscuz before 7.6.47 - Missing CSRF Protection on wpdGetFollowsPage
CVE-2026-22204 3.7 LOW wpDiscuz before 7.6.47 - Unsanitized Cookie Email Used as wp_mail() Recipient

IV. Related Vulnerabilities

Same product: wpDiscuz
Same vendor: gVectors
Same weakness: CWE-799

V. Comments for CVE-2026-22216

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