CVE-2024-53851 – Discourse URL Inline Onebox DoS Vulnerability

The following table lists the changes that have been made to the
CVE-2024-53851 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution
of a vulnerability, and for identifying the most recent changes that may
impact the vulnerability’s severity, exploitability, or other characteristics.

  • New CVE Received
    by [email protected]

    Feb. 04, 2025

    Action Type Old Value New Value
    Added Description Discourse is an open source platform for community discussion. In affected versions the endpoint for generating inline oneboxes for URLs wasn’t enforcing limits on the number of URLs that it accepted, allowing a malicious user to inflict denial of service on some parts of the app. This vulnerability is only exploitable by authenticated users. This issue has been patched in the latest stable, beta and tests-passed versions of Discourse. Users are advised to upgrade. Users unable to upgrade should turn off the `enable inline onebox on all domains` site setting and remove all entries from the `allowed inline onebox domains` site setting.
    Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
    Added CWE CWE-400
    Added Reference https://github.com/discourse/discourse/commit/416ec83ae57924d721e6e374f4cda78bd77a4599
    Added Reference https://github.com/discourse/discourse/security/advisories/GHSA-49rv-574x-wgpc
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