VulnSocial

CVE-2026-46404Disclosure

LOWCVSS 6.8 · MEDIUM

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

BigBlueButton is an open-source virtual classroom. Prior to 3.0.23, the presentation URL validation did not properly restrict access to site local and link local addresses. The redirect following logic now pins resolved IPs. This issue is fixed in version 3.0.23.

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0.5/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-918

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 2 signals
  • Disclosure: 1 classified signal
  • 2 total mentions across 1 day

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-07-16: 2Patch / Workaround · 2026-07-16: 1Technical Details · 2026-07-16: 207-16
Signal classification2 categories
Disclosure
150.0%
Patch
150.0%
Referenced assets2 URLs
By indicator
Full discourse2 posts
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-46404 BigBlueButton is an open-source virtual classroom. Prior to 3.0.23, the presentation URL validation did not properly restrict access to site local and link local addr… https://www.cve.org/CVERecord?id=CVE-2026-46404 ----- Traducción: CVE-2026-46404 Big… http://infoflow.cloud`

    Post summary

    The tweet announces CVE-2026-46404 for BigBlueButton, highlighting improper URL validation in versions prior to 3.0.23.

    0000030
    92 followersView on X
  • CVE@CVEnew
    Patch

    CVE-2026-46404 BigBlueButton is an open-source virtual classroom. Prior to 3.0.23, the presentation URL validation did not properly restrict access to site local and link local addr… https://www.cve.org/CVERecord?id=CVE-2026-46404

    Post summary

    A URL validation flaw in BigBlueButton pre‑3.0.23 is disclosed; the issue is presumably fixed in version 3.0.23, with no PoC, exploit, or evidence of active exploitation mentioned.

    00000587
    57.8K followersView on X

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