CVE-2026-22204

Plain English Summary

AI-powered analysis for quick understanding

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.

Technical Description

wpDiscuz before 7.6.47 contains an email header injection vulnerability that allows attackers to manipulate mail recipients by injecting malicious data into the comment_author_email cookie. Attackers can craft a malicious cookie value that, when processed through urldecode() and passed to wp_mail() functions, enables header injection to alter email recipients or inject additional headers.

CVSS Vector Analysis

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
Confidentiality ImpactHigh
Integrity ImpactHigh
Availability ImpactHigh
ScopeChanged

Vector String

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/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

Exploit Resources

Search for proof-of-concept code and exploit modules

Official References

Est. Bounty
$897($500-$1K)
Vendor Response
Grade APatched in 3 days

Quick Information

Published

Mar 13, 2026

25 days ago

Last Modified

Mar 17, 2026

21 days ago

Vendor

gvectors

Product

wpdiscuz

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CVE-2026-22216Medium

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.

CVE-2026-22215Medium

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.

CVE-2026-22210Low

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CVE-2026-22209Medium

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CVE-2026-22203Medium

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