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CVE-2026-27736

BigBlueButton has Open Redirect vulnerability in ApiController

CVSS 6.1 MEDIUMEPSS 0.1%CWE-601
Vexday Risk Score
13Baixo
Decisão SSVC (CISA)
Track
Sem sinal de exploração → monitorar
CVSS 6.1EPSS 0.1%KEV nãoPoC Nuclei Metasploit Patch
Ciclo de vida
25 fev 2026Publicada no NVD
Recomendação: Monitorar — sem sinal de exploração no momento.
BigBlueButton is an open-source virtual classroom. In versions on the 3.x branch prior to 3.0.20, the string received with errorRedirectUrl lacks validation, using it directly in the respondWithRedirect function leads to an Open Redirect vulnerability. BigBlueButton 3.0.20 patches the issue. No known workarounds are available.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

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