Nested Video MyCode Persistent XSS Vulnerability in MyBB before 1.8.21

CVE-2019-12830 · LOW Severity

AV:N/AC:M/AU:S/C:N/I:P/A:N

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.

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