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CVE-2026-22204

MEDIUM CVSS 4.0: 6.3 EPSS 0.05%
Updated Mar 17, 2026
Gvectors
Parameter Value
CVSS 6.3 (MEDIUM)
Affected Versions before 7.6.47
Fixed In 7.6.47
Type CWE-20 (Improper Input Validation)
Vendor Gvectors
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
Low
Partial data modification
Availability
None
No disruption

CVSS Vector v4.0

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Gvectors Wpdiscuz
cpe:2.3:a:gvectors:wpdiscuz:*:*:*:*:*:wordpress:*:*
7.6.47