CVE-2026-91831
Subscribe to Comments 2.3 - 2.3.2 - Author+ Email Header Injection via From Name Setting
- State
- Published
- Severity
- 3.8 Low
- Published
- Oct 19, 2026
- Updated
- Oct 19, 2026
- Reserved
- Sep 15, 2026
Description
The Subscribe to Comments WordPress plugin before 2.3.3 does not sanitise newline characters from a notification sender-name setting before using it in e-mail headers, allowing users with Author-level access and above to inject arbitrary e-mail headers, such as a hidden Bcc, and to spoof the sender.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 3.8 Low | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N | WPScan |
Weaknesses
- CWE-93 Improper Neutralization of CRLF Sequences ('CRLF Injection')
Affected Products
| Product | Versions |
|---|---|
Subscribe to CommentsUnknown |
|
References
- https://wpscan.com/vulnerability/6cd60f78-f5e2-4b4a-8d50-7d2bc4f981ee/exploitvdb-entrytechnical-description
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