CVE-2026-91831 — Subscribe to Comments 2.3 - 2.3.2 - Author+ Email Header Injection via From Name Setting

CVE-2026-91831

Subscribe to Comments 2.3 - 2.3.2 - Author+ Email Header Injection via From Name Setting PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Unknown / Subscribe to Comments	affected 2.3 before 2.3.3

CWE

No CWE identifiers supplied.

References

https://wpscan.com/vulnerability/6cd60f78-f5e2-4b4a-8d50-7d2bc4f981ee/

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.