CVE-2016-9409

MEDIUM 6.1CVE-2016-9409 · Published 31/01/2017 · updated 17/06/2026

In short

CVE-2016-9409 is a MEDIUM (CVSS 6.1) vulnerability affecting merge system (mybb), mybb (mybb).
Chance of exploitation in the next 30 days (EPSS): 1.3%, higher than 69.9% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
merge system mybb	`≤ 1.8.6`	No fix yet
mybb mybb	`≤ 1.8.6`	No fix yet

Description

Cross-site scripting (XSS) vulnerability in the Admin control panel in MyBB (aka MyBulletinBoard) before 1.8.7 and MyBB Merge System before 1.8.7 might allow remote attackers to inject arbitrary web script or HTML via vectors involving pruning logs.

References

openwall.com/lists/oss-security/2016/11/10/8 · Mailing List
openwall.com/lists/oss-security/2016/11/18/1 · Mailing List
securityfocus.com/bid/94395 · Third Party Advisory
blog.mybb.com/2016/03/11/mybb-1-8-7-merge-system-1-8-7-release · Patch

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Package

Affected versions

Patched versions

merge system

mybb

≤ 1.8.6

No fix yet

mybb

≤ 1.8.6

No fix yet

More vulnerabilities in merge system

See all →