Description

In MyBB before 1.8.21, an attacker can exploit a parsing flaw in the Private Message / Post renderer that leads to [video] BBCode persistent XSS to take over any forum account, aka a nested video MyCode issue.

Remediation

References

CVE-2019-12830

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Severity

High

Classification

CVE-2019-12830 CWE-707 CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

Tags

Missing Update Known Vulnerabilities