CVE-2016-9409: n/a vulnerability

CVE-2016-9409: Cross-site scripting (XSS) vulnerability in the Admin control panel in MyBB (aka MyBulletinBoard) before 1....

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 02:50 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2016-9409 is a cross-site scripting issue in the MyBB Admin control panel and MyBB Merge System before 1.8.7. If an affected administrator views malicious content tied to pruning logs, script or HTML could run in the admin context. Public sources do not provide a CVSS score. Exposure is limited to deployments running MyBB or MyBB Merge System versions earlier than 1.8.7. Risk is most relevant where administrators access affected control panel log-pruning functionality. Handle as a scheduled remediation item unless affected admin panels are broadly exposed or high-value. The issue is old and fixed, but administrator-context XSS can still matter on legacy forum platforms. Mitigation focus: Upgrade MyBB installations to version 1.8.7 or later.; Upgrade MyBB Merge System to version 1.8.7 or later.; Review MyBB vendor release guidance for any additional update instructions..

Prepared: Jun 13, 2026, 06:20 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jan 31, 2017, 22:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://blog.mybb.com/2016/03/11/mybb-1-8-7-merge-system-1-8-7-release/CVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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