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    CVE-2026-41127

    BigBlueButton is an open-source virtual classroom. Versions prior to 3.0.24 have a missing authorization that allows viewers to inject/overwrite captions Version 3.0.24 tightened the permissions on who is able to submit captions. No known workarounds are available.

    Published:Apr 21, 2026
    Last Modified:Apr 22, 2026
    EPS:Apr 21, 2026
    EPSS Score:0.00022
    CVSS Score:6.5

    Affected Products

    Vendor
    Bigbluebutton
    Product
    Bigbluebutton

    Exploits

    No exploit reference

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

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    CVE-2026-55491 (CVSS 5.4) — BigBlueButton is an open-source virtual classroom. Prior to 3.0.29, BigBlueButton failed to escape meetingName…
    CVE-2026-46355 (CVSS 7.1) — BigBlueButton is an open-source virtual classroom. Prior to 3.0.23, BigBlueButton exposed /bigbluebutton/api/h…
    CVE-2026-46682 (CVSS 8.5) — BigBlueButton is an open-source virtual classroom. Prior to 3.0.23, BigBlueButton allowed authenticated modera…
    CVE-2026-46353 (CVSS 8.1) — BigBlueButton is an open-source virtual classroom. Prior to 3.0.21, bbb-web checksum validation could be bypas…
    CVE-2026-46404 (CVSS 6.8) — BigBlueButton is an open-source virtual classroom. Prior to 3.0.23, the presentation URL validation did not pr…
    CVE-2026-46351 (CVSS 8.1) — BigBlueButton is an open-source virtual classroom. Prior to 3.0.21, bbb-web generated conference sessionToken …
    CVE-2026-27737 (CVSS 6.5) — BigBlueButton is an open-source virtual classroom. In versions prior to 3.0.19, the recording playback (presen…
    CVE-2026-41126 (CVSS 4.3) — BigBlueButton is an open-source virtual classroom. Versions prior to 3.0.24 have an Open Redirect through bigb…
    CVE-2026-27736 (CVSS 6.1) — BigBlueButton is an open-source virtual classroom. In versions on the 3.x branch prior to 3.0.20, the string r…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High