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    Vulnerabilities

    CVE-2026-3321

    Authorization Bypass in ON24 Q&A chat

    Last Modified: Apr 01, 2026
    Published: Mar 30, 2026

    CVE-2021-34823

    The ON24 ScreenShare (aka DesktopScreenShare.app) plugin before 2.0 for macOS allows remote file access via its built-in HTTP server. This allows unauthenticated remote users to retrieve files accessible to the logged-on macOS user. When a remote user sends a crafted HTTP request to the server, it triggers a code path that will download a configuration file from a specified remote machine over HTTP. There is an XXE flaw in processing of this configuration file that allows reading local (to macOS) files and uploading them to remote machines.

    Last Modified: Nov 21, 2024
    Published: Aug 13, 2021
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