LOWCVSS v3.1 3.8Vulnerability
CVE-2026-91831
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.
Properties
- Severity
- LOW
- Nvd fetched at
- 2026-10-20T21:14:08.448323+00:00
- Epss score
- 0.00161
- Cvss severity
- LOW
- Cvss score
- 3.8
- Retrieved at
- 2026-10-21T01:24:51+00:00
- Last source
- FIRST EPSS
- Score
- 3.8
- Cvss version
- 3.1
- Cve id
- CVE-2026-91831
- Cvss vector
- CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
- First seen by Signal
- 2026-10-19T11:09:12+00:00
- Vector
- CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N
- Published at
- 2026-10-19T07:16:32.187
- Last modified
- 2026-10-19T21:02:51.987
- Epss percentile
- 0.04892
Related Entities (1)
HAS_WEAKNESS (1)
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