{"id":"CVE-2026-91831","title":"Subscribe to Comments 2.3 - 2.3.2 - Author+ Email Header Injection via From Name Setting","summary":"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…","severity":"low","cvss":3.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N","cvssSource":"cna","cwe":["CWE-93"],"product":"Subscribe to Comments","affected":["subscribe_to_comments >= 2.3 < 2.3.3"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-19T09:25:57.636205Z"},"published":"2026-10-19","updated":"2026-10-19","sourceUpdated":"2026-10-19T09:31:21.214Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-91831","references":[{"url":"https://wpscan.com/vulnerability/6cd60f78-f5e2-4b4a-8d50-7d2bc4f981ee/"}],"tags":["cve.org"],"ingestedAt":"2026-10-19T07:09:59.589Z","slug":"CVE-2026-91831","body":"## Overview\n\nThe 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.\n\n## Affected\n\n- `subscribe_to_comments >= 2.3 < 2.3.3`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":21,"depthScoreParts":{"impact":20.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}