CVE-2023-45806
MEDIUM5.4EPSS 4.0%Discourse vulnerable to DoS via Regexp Injection in Full Name
Published: 3/6/2024Modified: 10/15/2025
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.
Affected packages (1)
- Bitnami/discoursefrom 0, < 3.2.0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L |
References (4)
- WEBhttps://github.com/discourse/discourse/commit/2ec25105179199cf80912bf011c18b8b870e1863
- WEBhttps://github.com/discourse/discourse/commit/7d484864fe91ff79c478f57e7ddb1235d701921e
- WEBhttps://github.com/discourse/discourse/security/advisories/GHSA-hcgf-hg2g-mw78
- WEBhttps://nvd.nist.gov/vuln/detail/CVE-2023-45806