TI-2016-07687 Aliases CVE-2016-9415 GHSA-4484-gfhj-qfpj

MyBB (aka MyBulletinBoard) before 1.8.8 on Windows and MyBB Merge System before 1.8.8 on…

LOW 37CWE-284Published 2017-01-31 · Updated 2024-08-06

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: None · High · None
Fix status: No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-284.

Summary

MyBB (aka MyBulletinBoard) before 1.8.8 on Windows and MyBB Merge System before 1.8.8 on Windows allow remote attackers to overwrite arbitrary CSS files via vectors related to "style import."

Why it matters now

EPSS 0.01861 79th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPE	Versions	Role	Vendor
cpe:2.3:a:mybb:merge_system::::::::	up to 1.8.7	Vulnerable	mybb
cpe:2.3:a:mybb:mybb::::::::	up to 1.8.7	Vulnerable	mybb
cpe:2.3:o:microsoft:windows::::::::	all versions	Running on	Microsoft

cpe:2.3:a:mybb:merge_system:*:*:*:*:*:*:*:* Versions up to 1.8.7 Vulnerable ·mybb
cpe:2.3:a:mybb:mybb:*:*:*:*:*:*:*:* Versions up to 1.8.7 Vulnerable ·mybb
cpe:2.3:o:microsoft:windows:*:*:*:*:*:*:*:* Versions all versions Running on ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2016-9415
2026-10-03 Alias added: GHSA-4484-gfhj-qfpj

References

Patch 3

TI-2016-07692 MyBB (aka MyBulletinBoard) before 1.8.8 and MyBB Merge System before 1.8.8 allow remote… CVSS 3.0CRITICAL 9.8
TI-2016-07675 newreply.php in MyBB (aka MyBulletinBoard) before 1.8.7 and MyBB Merge System before… CVSS 3.0CRITICAL 9.8
TI-2015-07387 SQL injection vulnerability in the Group Promotions module in the admin control panel in… CVSS 3.0CRITICAL 10.0
TI-2016-07688 SQL injection vulnerability in the users data handler in MyBB (aka MyBulletinBoard)… CVSS 3.0CRITICAL 9.8
TI-2016-07684 MyBB (aka MyBulletinBoard) before 1.8.7 and MyBB Merge System before 1.8.7 allow… CVSS 3.0CRITICAL 9.8
TI-2016-07674 SQL injection vulnerability in the moderation tool in MyBB (aka MyBulletinBoard) before… CVSS 3.0CRITICAL 9.8

See all 23 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences