CVE-2026-22216

MEDIUM 6.5

wpDiscuz before 7.6.47 - No Rate Limiting on Subscription Endpoints with LIKE Wildcard Bypass

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-799
Vendor	gvectors
Product	wpdiscuz
Published	Mar 13, 2026
Last Updated	Mar 13, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

Low

Affected Versions

gVectors / wpDiscuz

0 < 7.6.47

References

NVD ↗ CVE.org ↗ EPSS Data ↗

wordpress.org: https://wordpress.org/plugins/wpdiscuz/#developers wordpress.org: https://wordpress.org/plugins/wpdiscuz/ vulncheck.com: https://www.vulncheck.com/advisories/wpdiscuz-before-no-rate-limiting-on-subscription-endpoints-with-like-wildcard-bypass

Credits

Scott Moore - VulnCheck