CVE-2026-22204
wpDiscuz before 7.6.47 - Unsanitized Cookie Email Used as wp_mail() Recipient
- State
- Published
- Severity
- 6.3 Medium
- Published
- Mar 13, 2026
- Updated
- Mar 13, 2026
- Reserved
- Jan 6, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.3 Medium | 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 | VulnCheck |
| 3.1 | 3.7 Low | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N | VulnCheck |
Weaknesses
- CWE-20 Improper Input Validation
Affected Products
| Product | Versions |
|---|---|
wpDiscuzgVectors |
|
References
- wpDiscuz Changelogpatch
- wpDiscuzproduct
- VulnCheck Advisory: wpDiscuz before 7.6.47 - Unsanitized Cookie Email Used as wp_mail() Recipientthird-party-advisory
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