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CVE-2015-8976 Details

Description

Cross-site scripting (XSS) vulnerability in MyBB (aka MyBulletinBoard) before 1.6.18 and 1.8.x before 1.8.6 and MyBB Merge System before 1.8.6 might allow remote attackers to inject arbitrary web script or HTML via vectors related to "old upgrade files."

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.1 MEDIUMVector:CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://blog.mybb.com/2015/09/07/mybb-1-8-6-1-6-18-merge-system-1-8-6-release/	CVE	Release NotesVendor Advisory
http://www.openwall.com/lists/oss-security/2016/11/10/8	CVE	Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/11/18/1	CVE	Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/94397	CVE
https://blog.mybb.com/2015/09/07/mybb-1-8-6-1-6-18-merge-system-1-8-6-release/	[email protected]	Release NotesVendor Advisory
http://www.openwall.com/lists/oss-security/2016/11/10/8	[email protected]	Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/11/18/1	[email protected]	Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/94397	[email protected]

see all 8 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-79	Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')	[email protected]

Affected Products

Product	Versions
mybb merge system	1.8.5
CPE cpe:2.3:a:mybb:merge_system:1.8.5:::::::* Remediation No remediation found in references.
mybb mybb	<= 1.6.17 1.8.0 1.8.1 1.8.2 1.8.3
CPE cpe:2.3:a:mybb:mybb:::::::: cpe:2.3:a:mybb:mybb:1.8.0:::::::* cpe:2.3:a:mybb:mybb:1.8.1:::::::* cpe:2.3:a:mybb:mybb:1.8.2:::::::* cpe:2.3:a:mybb:mybb:1.8.3:::::::* cpe:2.3:a:mybb:mybb:1.8.4:::::::* cpe:2.3:a:mybb:mybb:1.8.5:::::::* Remediation No remediation found in references.

Change History

6 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
May 13, 2026	CVE Status Change	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Feb 3, 2017	Initial Analysis	[email protected]
Feb 2, 2017	CVE Modified	[email protected]