HIGH
WordPress before 4.8.3 is affected by an issue where $wpdb->prepare() can create unexpected and unsafe queries leading to potential SQL injection (SQLi) in plugins and themes, as demonstrated by a "double prepare" approach, a different vulnerability than CVE-2017-14723.
http://www.securityfocus.com/bid/101638
https://blog.ircmaxell.com/2017/10/disclosure-wordpress-wpdb-sql-injection-technical.html
https://codex.wordpress.org/Version_4.8.3
https://github.com/WordPress/WordPress/commit/a2693fd8602e3263b5925b9d799ddd577202167d
https://lists.debian.org/debian-lts-announce/2017/11/msg00003.html
https://wordpress.org/news/2017/10/wordpress-4-8-3-security-release/
Source: MITRE
Published: 2017-11-02
Updated: 2018-02-04
Type: CWE-89
Base Score: 7.5
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 10
Severity: HIGH
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 3.9
Severity: CRITICAL