CVE-2026-22216

MEDIUM EPSS 23.8%
Published Mar 13, 20263mo ago · Modified Mar 17, 20263mo ago
6.9 CVSS 4.0
Medium
Find Similar
Published Mar 13, 2026 3mo ago
Last Modified Mar 17, 2026 3mo ago

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 Details

Base Score
6.9
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
23.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-799

Affected Products 1

VendorProductVersionRange
gvectorswpdiscuz* <7.6.47

References 3

  • wordpress.org https://wordpress.org/plugins/wpdiscuz/
    Product
  • wordpress.org https://wordpress.org/plugins/wpdiscuz/#developers
    ProductRelease Notes
  • vulncheck.com https://www.vulncheck.com/advisories/wpdiscuz-before-no-rate-limiting-on-subscription-endpoints-with-like-wildcard-bypass
    Third Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.