CVE-2022-41921: Discourse chat messages should have a maximum character limit
First published: Mon Nov 28 2022(Updated: )
Discourse is an open-source discussion platform. Prior to version 2.9.0.beta13, users can post chat messages of an unlimited length, which can cause a denial of service for other users when posting huge amounts of text. Users should upgrade to version 2.9.0.beta13, where a limit has been introduced. No known workarounds are available.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Discourse | <2.9.0 | |
| Discourse | =2.9.0-beta1 | |
| Discourse | =2.9.0-beta10 | |
| Discourse | =2.9.0-beta11 | |
| Discourse | =2.9.0-beta12 | |
| Discourse | =2.9.0-beta2 | |
| Discourse | =2.9.0-beta3 | |
| Discourse | =2.9.0-beta4 | |
| Discourse | =2.9.0-beta5 | |
| Discourse | =2.9.0-beta6 | |
| Discourse | =2.9.0-beta7 | |
| Discourse | =2.9.0-beta8 | |
| Discourse | =2.9.0-beta9 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2022-41921?
CVE-2022-41921 has a moderate severity rating as it can lead to a denial of service by allowing users to post excessively long messages.
How do I fix CVE-2022-41921?
To fix CVE-2022-41921, users should upgrade to Discourse version 2.9.0.beta13 or later, which implements a limit on message length.
Which versions of Discourse are affected by CVE-2022-41921?
CVE-2022-41921 affects all versions of Discourse prior to 2.9.0.beta13.
What impact does CVE-2022-41921 have on users?
CVE-2022-41921 may cause service disruptions for users when someone posts extremely long messages, potentially overwhelming the platform.
Is there a workaround for CVE-2022-41921 before upgrading?
There are no suggested workarounds for CVE-2022-41921 other than upgrading to the patched version.
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- agent/author
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- agent/title
- agent/weakness
- agent/last-modified-date
- agent/first-publish-date
- agent/description
- agent/event
- agent/source
- agent/tags
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/discourse
- canonical/discourse
- version/discourse/2.9.0-beta1
- version/discourse/2.9.0-beta10
- version/discourse/2.9.0-beta11
- version/discourse/2.9.0-beta12
- version/discourse/2.9.0-beta2
- version/discourse/2.9.0-beta3
- version/discourse/2.9.0-beta4
- version/discourse/2.9.0-beta5
- version/discourse/2.9.0-beta6
- version/discourse/2.9.0-beta7
- version/discourse/2.9.0-beta8
- version/discourse/2.9.0-beta9