What is the severity of CVE-2022-23641?

CVE-2022-23641 is considered a moderate severity vulnerability due to its potential to cause Denial of Service attacks.

How do I fix CVE-2022-23641?

To mitigate CVE-2022-23641, update Discourse to version 2.8.1 or later in the stable branch, or to version 2.9.0.beta2 or later in the beta branches.

What kind of attack does CVE-2022-23641 allow?

CVE-2022-23641 allows users to trigger a Denial of Service attack by posting a streaming URL.

Which versions of Discourse are affected by CVE-2022-23641?

CVE-2022-23641 affects Discourse versions prior to 2.8.1 in the stable branch and 2.9.0.beta2 in the beta branches.

Is CVE-2022-23641 easy to exploit?

Yes, CVE-2022-23641 can be easily exploited by posting specially crafted URLs to the Discourse platform.

Vulnerability/
CVE-2022-23641

medium

6.5

CWE

835

15/2/2022

23/4/2025

CVE-2022-23641: Denial of Service in Discourse

First published: Tue Feb 15 2022(Updated: )

Discourse is an open source discussion platform. In versions prior to 2.8.1 in the `stable` branch, 2.9.0.beta2 in the `beta` branch, and 2.9.0.beta2 in the `tests-passed` branch, users can trigger a Denial of Service attack by posting a streaming URL. Parsing Oneboxes in the background job trigger an infinite loop, which cause memory leaks. This issue is patched in version 2.8.1 of the `stable` branch, 2.9.0.beta2 of the `beta` branch, and 2.9.0.beta2 of the `tests-passed` branch. As a workaround, disable onebox in admin panel completely or specify allow list of domains that will be oneboxed.

Credit: security-advisories@github.com

Affected Software	Affected Version	How to fix
Discourse	<2.8.1

Remedy

https://github.com/discourse/discourse/commit/a34075d205a8857e29574ffd82aaece0c467565e

Remedy

https://github.com/discourse/discourse/pull/15927

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2022-23641?
CVE-2022-23641 is considered a moderate severity vulnerability due to its potential to cause Denial of Service attacks.
How do I fix CVE-2022-23641?
To mitigate CVE-2022-23641, update Discourse to version 2.8.1 or later in the stable branch, or to version 2.9.0.beta2 or later in the beta branches.
What kind of attack does CVE-2022-23641 allow?
CVE-2022-23641 allows users to trigger a Denial of Service attack by posting a streaming URL.
Which versions of Discourse are affected by CVE-2022-23641?
CVE-2022-23641 affects Discourse versions prior to 2.8.1 in the stable branch and 2.9.0.beta2 in the beta branches.
Is CVE-2022-23641 easy to exploit?
Yes, CVE-2022-23641 can be easily exploited by posting specially crafted URLs to the Discourse platform.

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