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.

INFO

Published Date :

2026-03-13T01:18:16.708Z

Last Modified :

2026-03-13T14:14:03.341Z

Source :

VulnCheck
AFFECTED PRODUCTS

The following products are affected by CVE-2026-22216 vulnerability.

Vendors Products
Gvectors
  • Wpdiscuz
Wordpress
  • Wordpress
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-22216.

URL Resource
https://wordpress.org/plugins/wpdiscuz/ cve-icon cve-icon
https://wordpress.org/plugins/wpdiscuz/#developers cve-icon cve-icon
https://www.vulncheck.com/advisories/wpdiscuz-before-no-rate-limiting-on-subscription-endpoints-with-like-wildcard-bypass cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact