CVE-2026-46355
An attacker can exploit multiple vulnerabilities in BigBlueButton to present false information and to conduct a SQL injection attack.
CSIRTS triage
- What
- Multiple vulnerabilities in BigBlueButton allow attackers to conduct SQL injection and present false information via cross-site scripting.
- Who is affected
- All deployments of BigBlueButton are affected.
- Urgency
- High urgency; SQL injection is a critical vulnerability class enabling data compromise regardless of exploitation status.
- Action
- Update BigBlueButton to a patched version addressing CVE-2026-46355 and CVE-2026-46682.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 11% of all EPSS-scored CVEs.
Advisory coverage (2)
- high[UPDATE] [high] BigBlueButton: Multiple Vulnerabilitiescert-bund · 2026-08-21
- highCVE-2026-46355: BigBlueButton is an open-source virtual classroom. Prior to 3.0.23, BigBlueButton exposed /big…nvd · 2026-08-20
External references
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[](https://www.csirts.com/cve/CVE-2026-46355)