CVE Feed

    Dashboard / CVE / CVE-2023-42804

    CVE-2023-42804

    BigBlueButton is an open-source virtual classroom. BigBlueButton prior to version 2.6.0-beta.1 has a path traversal vulnerability that allows an attacker with a valid starting folder path, to traverse and read other files without authentication, assuming the files have certain extensions (txt, swf, svg, png). In version 2.6.0-beta.1, input validation was added on the parameters being passed and dangerous characters are stripped. There are no known workarounds.

    Published:Oct 30, 2023
    Last Modified:Nov 21, 2024
    EPS:Oct 30, 2023
    EPSS Score:0.00235
    CVSS Score:3.1

    Affected Products

    Vendor
    Bigbluebutton
    Product
    Bigbluebutton

    Exploits

    No exploit reference

    Related CVEs

    CVE-2026-55489 (CVSS 4.9) — BigBlueButton is an open-source virtual classroom. Prior to 3.0.29, BigBlueButton presenters could submit a pr…
    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-2026-41127 (CVSS 6.5) — BigBlueButton is an open-source virtual classroom. Versions prior to 3.0.24 have a missing authorization that …
    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…

    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