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CVE-2015-8973 Details

Description

xmlhttp.php in MyBB (aka MyBulletinBoard) before 1.6.18 and 1.8.x before 1.8.6 and MyBB Merge System before 1.8.6 allows remote attackers to bypass intended access restrictions via vectors related to the forum password.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:8.3 HIGHVector:CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:L

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	Third Party AdvisoryVDB Entry
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]	Third Party AdvisoryVDB Entry

see all 8 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-284	Improper Access Control	[email protected]

Affected Products

Product	Versions
mybb merge system	<= 1.8.5
CPE cpe:2.3:a:mybb:merge_system:::::::: 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 5, 2017	Initial Analysis	[email protected]
Feb 2, 2017	CVE Modified	[email protected]