CVE-2026-22216

MEDIUM

6.5

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.

CVE Details

CVSS v3.1 Score6.5

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/13/2026

Last Modified3/17/2026

Sourcenvd

Honeypot Sightings0

Affected Products

gvectors:wpdiscuz

Weaknesses (CWE)

CWE-799

References

https://wordpress.org/plugins/wpdiscuz/(disclosure@vulncheck.com)

https://wordpress.org/plugins/wpdiscuz/#developers(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/wpdiscuz-before-no-rate-limiting-on-subscription-endpoints-with-like-wildcard-bypass(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.