LogInOut.php in Simple Machines Forum (SMF) 2.1 allows remote attackers to conduct PHP object injection attacks and execute arbitrary PHP code via vectors related to variables derived from user input in a foreach loop.
https://github.com/SimpleMachines/SMF2.1/issues/3522
https://github.com/SimpleMachines/SMF2.1/commit/19e560b9f3e8fc6d7d9d60c1ff617b5ed5c08008#diff-513c4f9c501cbefcc14420c01848f23c
http://www.openwall.com/lists/oss-security/2016/06/18/1
http://www.openwall.com/lists/oss-security/2016/06/10/7
Source: Mitre, NVD
Published: 2017-02-09
Updated: 2026-06-17
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
EPSS: 0.00595