CVE-2026-91831 — Subscribe to Comments 2.3 - 2.3.2 - Author+ Email Header Injection via From Name Setting
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 …
Published: 2026-10-19 · CVSS: 3.8 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7