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.
History

Fri, 13 Mar 2026 02:00:00 +0000

Type Values Removed Values Added
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.
Title wpDiscuz before 7.6.47 - Unsanitized Cookie Email Used as wp_mail() Recipient
First Time appeared Gvectors
Gvectors wpdiscuz
Weaknesses CWE-20
CPEs cpe:2.3:a:gvectors:wpdiscuz:*:*:*:*:*:wordpress:*:*
Vendors & Products Gvectors
Gvectors wpdiscuz
References
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N'}

cvssV4_0

{'score': 6.3, 'vector': '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'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-03-13T01:18:11.931Z

Reserved: 2026-01-06T16:47:17.185Z

Link: CVE-2026-22204

cve-icon Vulnrichment

No data.

cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

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