CVE-2026-45120mediumCWE-639

CVE-2026-45120: fallo de gravedad media en mybb

MyBB: Insufficient authorization for private calendar events

Publicada el

Seguir esta CVE+ Monitorear mybb

Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.

13Vexday Risk Score

Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.

ssvc Trackcvss 5.4epss 0.3%
MyBB is free and open source forum software. Prior to 1.8.40, the calendar module does not verify private event status consistently, allowing users with viewing and moderation permissions to access and moderate private events. The private-event check used by get_events() in inc/functions_calendar.php and the event action is missing from the remaining calendar.php actions, despite the limited-access behavior described in inc/languages/english/calendar.lang.php. This issue is fixed in version 1.8.40.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Productos afectados
mybb · mybb
CVEs relacionadas — mybb

En el mismo producto, de las más peligrosas a las menos.

CVE-2022-24734HIGHRemote code execution in mybbEPSS 77.8%CVE-2022-39265HIGHMail settings' command parameter injection in mybbEPSS 3.1%CVE-2026-45117CRITICALMyBB: Installer database configuration RCEEPSS 1.1%CVE-2025-48940HIGHMyBB's upgrade component vulnerable to local file inclusionEPSS 0.6%CVE-2024-23335MEDIUMBackups directory .htaccess deletion in. MyBBEPSS 0.6%CVE-2026-45734MEDIUMMyBB: Default CAPTCHA missing invalidationEPSS 0.6%