Servers and applications
CVE-2019-12830
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.
- Severity
- High 8.7
- Published
- 15 Jun 2019
- Last changed
- 17 Jun 2026
- Added to UpHeron
- 1 Nov 2026
- Fixed in
- 1.8.21
- Exploit chance
- 1% in the next 30 daysHigher than 61% of CVEs. EPSS by FIRST, 10 Nov 2026
- Sources
- NVD
Affected software
| Software | Affected versions |
|---|---|
MyBBServers and applications · cpe:a:mybb:mybb |
|