Low
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 users with Author-level access and above to inject arbitrary e-mail headers, such as a hidden Bcc, and to spoof the sender.
Announced Source revision 1
Original source ↗CVE-2026-91831
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-91831
Subscribe to Comments
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "Unknown",
"product": "Subscribe to Comments",
"versions": [
{
"status": "affected",
"version": "2.3",
"lessThan": "2.3.3",
"versionType": "semver"
}
],
"collectionURL": "https://wordpress.org/plugins",
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-91831
Source reference:
/cveMetadata/cveId
Publisher severity
low
Source reference: /containers/cna/metrics
- Event
- #37751 · Revision 1
- Added to Heist Feed
- Publisher date