CVE-2026-22182
wpDiscuz before 7.6.47 - Unauthenticated Email Notification Flood via wpdCheckNotificationType
Description
wpDiscuz before 7.6.47 contains an unauthenticated denial of service vulnerability that allows anonymous users to trigger mass notification emails by exploiting the checkNotificationType() function. Attackers can repeatedly call the wpdiscuz-ajax.php endpoint with arbitrary postId and comment_id parameters to flood subscribers with notifications, as the handler lacks nonce verification, authentication checks, and rate limiting.
INFO
Published Date :
March 13, 2026, 7:54 p.m.
Last Modified :
March 17, 2026, 8:23 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update wpDiscuz to the latest version.
- Verify nonce verification and authentication checks.
- Implement rate limiting for the notification endpoint.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-22182.
| URL | Resource |
|---|---|
| https://wordpress.org/plugins/wpdiscuz/ | Product |
| https://wordpress.org/plugins/wpdiscuz/#developers | Product Release Notes |
| https://www.vulncheck.com/advisories/wpdiscuz-before-unauthenticated-email-notification-flood-via-wpdchecknotificationtype | Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-22182 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-22182
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-22182 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-22182 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Mar. 17, 2026
Action Type Old Value New Value Added CWE CWE-770 Added CWE CWE-862 Added CPE Configuration OR *cpe:2.3:a:gvectors:wpdiscuz:*:*:*:*:*:wordpress:*:* versions up to (excluding) 7.6.47 Added Reference Type VulnCheck: https://wordpress.org/plugins/wpdiscuz/ Types: Product Added Reference Type VulnCheck: https://wordpress.org/plugins/wpdiscuz/#developers Types: Product, Release Notes Added Reference Type VulnCheck: https://www.vulncheck.com/advisories/wpdiscuz-before-unauthenticated-email-notification-flood-via-wpdchecknotificationtype Types: Third Party Advisory -
New CVE Received by [email protected]
Mar. 13, 2026
Action Type Old Value New Value Added Description wpDiscuz before 7.6.47 contains an unauthenticated denial of service vulnerability that allows anonymous users to trigger mass notification emails by exploiting the checkNotificationType() function. Attackers can repeatedly call the wpdiscuz-ajax.php endpoint with arbitrary postId and comment_id parameters to flood subscribers with notifications, as the handler lacks nonce verification, authentication checks, and rate limiting. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/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 Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-862 Added Reference https://wordpress.org/plugins/wpdiscuz/ Added Reference https://wordpress.org/plugins/wpdiscuz/#developers Added Reference https://www.vulncheck.com/advisories/wpdiscuz-before-unauthenticated-email-notification-flood-via-wpdchecknotificationtype