CVE-2026-46404
A remote, authenticated attacker can exploit multiple vulnerabilities in BigBlueButton to bypass security measures and disclose confidential information.
CSIRTS triage
- What
- Multiple vulnerabilities allow bypassing security measures and disclosing confidential information.
- Who is affected
- Remote, authenticated attackers can exploit vulnerabilities in BigBlueButton.
- Urgency
- Remediation is high urgency due to the high severity of the vulnerabilities.
- Action
- Update to the latest version to mitigate the vulnerabilities.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.26% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 17% of all EPSS-scored CVEs.
Advisory coverage (2)
- high[UPDATE] [high] BigBlueButton: Multiple vulnerabilitiescert-bund · 2026-07-17
- mediumCVE-2026-46404: BigBlueButton is an open-source virtual classroom. Prior to 3.0.23, the presentation URL valid…nvd · 2026-07-16
External references
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[](https://www.csirts.com/cve/CVE-2026-46404)