CVE-2016-9421

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.

• CWE-79

• http://www.openwall.com/lists/oss-security/2016/11/10/8Mailing List, Patch, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2016/11/18/1Mailing List, Patch, Third Party Advisory
• http://www.securityfocus.com/bid/94396Third Party Advisory, VDB Entry
• https://blog.mybb.com/2016/10/17/mybb-1-8-8-merge-system-1-8-8-release/Patch, Release Notes, Vendor Advisory
• http://www.openwall.com/lists/oss-security/2016/11/10/8Mailing List, Patch, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2016/11/18/1Mailing List, Patch, Third Party Advisory
• http://www.securityfocus.com/bid/94396Third Party Advisory, VDB Entry
• https://blog.mybb.com/2016/10/17/mybb-1-8-8-merge-system-1-8-8-release/Patch, Release Notes, Vendor Advisory

Published

Jan 31, 2017

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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