CVE-2023-45806: Discourse vulnerable to DoS via Regexp Injection in Full Name
First published: Fri Nov 10 2023(Updated: )
Discourse is an open source platform for community discussion. Prior to version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches, if a user has been quoted and uses a `|` in their full name, they might be able to trigger a bug that generates a lot of duplicate content in all the posts they've been quoted by updating their full name again. Version 3.1.3 of the `stable` branch and version 3.2.0.beta3 of the `beta` and `tests-passed` branches contain a patch for this issue. No known workaround exists, although one can stop the "bleeding" by ensuring users only use alphanumeric characters in their full name field.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| <3.1.3 | ||
| <3.2.0 | ||
| =3.2.0-beta1 | ||
| =3.2.0-beta2 |
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Reference Links
Frequently Asked Questions
What is the vulnerability ID for this Discourse vulnerability?
The vulnerability ID for this Discourse vulnerability is CVE-2023-45806.
What is the title of this Discourse vulnerability?
The title of this Discourse vulnerability is 'Discourse vulnerable to DoS via Regexp Injection in Full Name'.
What is the severity of CVE-2023-45806?
The severity of CVE-2023-45806 is medium with a CVSS score of 5.4.
Which versions of Discourse are affected by this vulnerability?
Versions up to and excluding 3.1.3 in the 'stable' branch and versions up to and excluding 3.2.0 in the 'beta' and 'tests-passed' branches are affected.
How can this vulnerability be fixed?
To fix this vulnerability, update to version 3.1.3 in the 'stable' branch or version 3.2.0.beta3 in the 'beta' and 'tests-passed' branches of Discourse.
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- version/discourse discourse/3.2.0-beta1
- version/discourse discourse/3.2.0-beta2