CVE-2016-9421

medium

Description

Cross-site scripting (XSS) vulnerability in the Users module in the Admin control panel in MyBB (aka MyBulletinBoard) before 1.8.8 and MyBB Merge System before 1.8.8 might allow remote attackers to inject arbitrary web script or HTML via unspecified vectors.

References

Advisories
More

http://www.securityfocus.com/bid/94396

http://www.openwall.com/lists/oss-security/2016/11/18/1

http://www.openwall.com/lists/oss-security/2016/11/10/8

https://blog.mybb.com/2016/10/17/mybb-1-8-8-merge-system-1-8-8-release/

Details

Source: Mitre, NVD

Published: 2017-01-31

Updated: 2026-06-17

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 6.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Severity: Medium

EPSS

EPSS: 0.00611