CVE Tools
Sign in

CVE-2026-22216

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

Published: Mar 13, 2026Updated: Mar 17, 2026 Sources: CVE List NVDCWE-799
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.3%
Top 76.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:LA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:LAvailability
Low
Open in CVSS calculator →

Weaknesses

CWE-799

Affected Products

wpdiscuzgvectors
CMS Plugin
Web & CMS Plugins / wordpress-plugin
wpDiscuzgVectors
CMS Plugin
Web & CMS Plugins / wordpress-plugin
gvectorscommercialWeb & CMS Pluginsaka wpforo forum, wpdiscuz

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.

References

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

Timeline

Published
Mar 13, 2026
Last Updated
Mar 17, 2026

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2026-22216 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows