Vulnerability CVE-2023-45806
Published: 2023-11-10

Description:
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.

 References:
https://github.com/discourse/discourse/security/advisories/GHSA-hcgf-hg2g-mw78
https://github.com/discourse/discourse/commit/2ec25105179199cf80912bf011c18b8b870e1863
https://github.com/discourse/discourse/commit/7d484864fe91ff79c478f57e7ddb1235d701921e
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