CVE-2026-22182
Plain English Summary
AI-powered analysis for quick understanding
This vulnerability allows an attacker to overwhelm subscribers with mass notification emails by exploiting a flaw in the wpDiscuz plugin, which lets anyone send repeated requests without proper checks. The attacker just needs to know the post and comment IDs, and they can easily flood users' inboxes without needing to log in.
Technical 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.
CVSS Vector Analysis
Vector String
CVSS:4.0/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:XExploit Resources
Search for proof-of-concept code and exploit modules
Official References
Quick Information
Published
Mar 13, 2026
25 days ago
Last Modified
Mar 17, 2026
21 days ago
Vendor
gvectors
Product
wpdiscuz
Related Vulnerabilities
This vulnerability allows attackers to send unwanted notification emails to multiple email addresses by exploiting a flaw in the wpDiscuz plugin, which does not limit how many subscriptions can be made. The attacker does not need to be logged in, making it easy for anyone to abuse this issue by sending specially crafted requests.
This vulnerability allows attackers to send unauthorized requests that can reveal or change user follow relationships on wpDiscuz without proper security checks. To exploit this, the attacker needs to trick a logged-in user into clicking a malicious link while they are on the site.
This vulnerability allows attackers to inject malicious JavaScript into comments on WordPress sites using the wpDiscuz plugin, which can then execute when other users view those comments. It requires the attacker to create specially crafted attachment records or use specific hooks to exploit the issue, affecting users who interact with the comments.
This vulnerability allows an attacker with admin access to inject harmful scripts into the website's custom CSS settings, which can then run arbitrary JavaScript in the browsers of users visiting the site. This means that if an attacker can log in as an admin, they can potentially execute malicious actions on users' devices.
This vulnerability allows attackers to manipulate email recipients by injecting harmful data into a specific cookie used by the wpDiscuz plugin. To exploit this, the attacker needs to craft a malicious cookie value that the system processes, which can lead to unauthorized emails being sent to unintended recipients.