Critical severity9.8NVD Advisory· Published Jan 31, 2017· Updated Jun 17, 2026

CVE-2016-9403

Description

newreply.php in MyBB (aka MyBulletinBoard) before 1.8.7 and MyBB Merge System before 1.8.7 allows remote attackers to have unspecified impact by leveraging a missing permission check.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

MyBB/Merge System2 versions
cpe:2.3:a:mybb:merge_system:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:mybb:merge_system:*:*:*:*:*:*:*:*range: <=1.8.6
- (no CPE)range: <1.8.7
MyBB/Mybb2 versions
cpe:2.3:a:mybb:mybb:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:mybb:mybb:*:*:*:*:*:*:*:*range: <=1.8.6
- (no CPE)range: <1.8.7

Patches

Vulnerability mechanics

References

www.openwall.com/lists/oss-security/2016/11/10/8nvdMailing ListPatchThird Party Advisory
www.openwall.com/lists/oss-security/2016/11/18/1nvdMailing ListPatchThird Party Advisory
blog.mybb.com/2016/03/11/mybb-1-8-7-merge-system-1-8-7-release/nvdPatchRelease NotesVendor Advisory
www.securityfocus.com/bid/94395nvdThird Party AdvisoryVDB Entry

News mentions

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cvss	0.637
epss	0.002
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000