PHPMailer before 5.2.27 and 6.x before 6.0.6 is vulnerable to an object injection attack.
https://www.debian.org/security/2018/dsa-4351
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KPU66INRFY5BQ3ESVPRUXJR4DXQAFJVT/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3B5WDPGUFNPG4NAZ6G4BZX43BKLAVA5B/
https://lists.debian.org/debian-lts-announce/2018/12/msg00020.html
https://github.com/PHPMailer/PHPMailer/releases/tag/v6.0.6
https://github.com/PHPMailer/PHPMailer/releases/tag/v5.2.27
Source: Mitre, NVD
Published: 2018-11-16
Updated: 2023-11-07
Base Score: 6.8
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P
Severity: Medium
Base Score: 8.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Severity: High