Cross-site scripting (XSS) vulnerability in MyBB (aka MyBulletinBoard) before 1.8.7 and MyBB Merge System before 1.8.7 might allow remote attackers to inject arbitrary web script or HTML via vectors involving Mod control panel logs.
https://blog.mybb.com/2016/03/11/mybb-1-8-7-merge-system-1-8-7-release/
http://www.securityfocus.com/bid/94395
http://www.openwall.com/lists/oss-security/2016/11/18/1
http://www.openwall.com/lists/oss-security/2016/11/10/8
https://euvd.enisa.europa.eu/vulnerability/EUVD-2016-10217
Source: Mitre, NVD
Published: 2017-01-31
Updated: 2026-06-17
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 6.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS: 0.01271