What’s Vulnerable › Vulnerabilities

CVE-2018-17128

• Severity: medium (CVSS 5.4 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 74.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-09-17 · updated 2026-06-17
• Weakness: CWE-79

Description

A Persistent XSS issue was discovered in the Visual Editor in MyBB before 1.8.19 via a Video MyCode.

Affected products

• mybb: before 1.8.19 — fixed in 1.8.19

How to fix

Upgrade to a fixed version: mybb 1.8.19. Check the vendor advisory for mitigations.

References

• https://blog.mybb.com/2018/09/11/mybb-1-8-19-released-security-maintenance-release/
• https://www.exploit-db.com/exploits/45449/
• https://blog.mybb.com/2018/09/11/mybb-1-8-19-released-security-maintenance-release/
• https://www.exploit-db.com/exploits/45449/

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