[UPDATE] [high] BigBlueButton: Multiple Vulnerabilities

highCVE-2026-46355 CVE-2026-46682

An attacker can exploit multiple vulnerabilities in BigBlueButton to present false information and to conduct a SQL injection attack.

CSIRTS triage

vendor: BigBlueButton product: BigBlueButton SQL injection Cross-site scripting

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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Details

Source: CERT-Bund (BSI) Security Advisories (DE · national-cert · site)
Severity: high
Published: 2026-08-21
Exploitation: Not in CISA KEV at last sync
Language: Machine-translated to English — verify against the original

Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-1804

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-463550.21% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 11% of all EPSS-scored CVEs.
Low exploitation riskCVE-2026-466820.33% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 26% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-46355	coverage & exploitation status	NVD · CVE.org
CVE-2026-46682	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for BigBlueButton

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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