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CVE-2026-91831

3.8 low SSVC exploitation: none Deferred
NVD · CVE.org

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 2

  1. StatusReceived → DeferredNVD modified 2026-10-19 21:02
  2. First seenCVSS 3.8NVD modified 2026-10-19 10:16

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 1