CVSS 3.8 (low) · published 2026-10-19
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.
Weakness: CWE-93
Source: NVD CVE-2026-91831
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