VULNERABILITY INTELLIGENCE
CVE-2026-91831
CVSS score3.8 LOW
EPSS probability0.16%
CISA KEVNot currently listed
Published2026-10-19
Last modified2026-10-19
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
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.
Weakness classification
- 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-93