Vulnerability · Published Mar 13, 2026 · Assigned by VulnCheck

CVE-2026-22204wpDiscuz before 7.6.47 - Unsanitized Cookie Email Used as wp_mail() Recipient

Low 3.7

In plain English

A low-severity improper input validation in wpDiscuz from gVectors. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).

Severity (CVSS 3.1)3.7Low

Exploit odds (30 days)0.2%top 85.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
gVectors	wpDiscuz	0 – before 7.6.47

Weakness: CWE-20 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

References

wpDiscuz Changelog patch
wpDiscuz product
VulnCheck Advisory: wpDiscuz before 7.6.47 - Unsanitized Cookie Email Used as wp_mail() Recipient third-party-advisory