CVE-2023-42803

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    CVE-2023-42803

    Published: 30 Oct 2023Last Modified: 28 Oct 2026

    Summary: BigBlueButton Unrestricted File Upload vulnerability

    Details: BigBlueButton is an open-source virtual classroom. BigBlueButton prior to version 2.6.0-beta.2 is vulnerable to unrestricted file upload, where the insertDocument API call does not validate the given file extension before saving the file, and does not remove it in case of validation failures. BigBlueButton 2.6.0-beta.2 contains a patch. There are no known workarounds.

    References: https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/42xxx/CVE-2023-42803.json, https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-w98f-6x8w-xhjc, https://nvd.nist.gov/vuln/detail/CVE-2023-42803, https://github.com/bigbluebutton/bigbluebutton/pull/15990

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -4a81825bad7b35272a4f64a824f654b1404123a7

    Affected versions

    v2.6.0-beta.1
    v2.6.0-alpha.4
    v2.6.0-alpha.3
    v2.6.0-alpha.2
    v2.6.0-alpha.1

    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
    CVE-2023-42803 | CVE-DB