TI-2016-07677 Aliases CVE-2016-9405 GHSA-7j74-wphj-vm9c

Cross-site scripting (XSS) vulnerability in member validation in MyBB (aka…

LOW 30CWE-79Published 2017-01-31 · Updated 2024-08-06

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-79.

Summary

Cross-site scripting (XSS) vulnerability in member validation 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 unspecified vectors.

Why it matters now

EPSS 0.01271 70th 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 · 2

CPE	Versions	Role	Vendor
cpe:2.3:a:mybb:merge_system::::::::	up to 1.8.6	Vulnerable	mybb
cpe:2.3:a:mybb:mybb::::::::	up to 1.8.6	Vulnerable	mybb

cpe:2.3:a:mybb:merge_system:*:*:*:*:*:*:*:* Versions up to 1.8.6 Vulnerable ·mybb
cpe:2.3:a:mybb:mybb:*:*:*:*:*:*:*:* Versions up to 1.8.6 Vulnerable ·mybb

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2016-9405
2026-10-03 Alias added: GHSA-7j74-wphj-vm9c

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