CVE-2023-45806
Discourse vulnerable to DoS via Regexp Injection in Full Name
MEDIUM 5.4EPSS 1.0%
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
- discourse
- CVSS v3.1 NVD
- 5.4 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L - CVSS v3.1 GITHUB
- 4.3 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L - EPSS
- 1.00% chance of exploitation in the next 30 days, 62nd percentile
- Published
- 2023-11-10
- Updated
- 2024-09-03
Proof-of-concept exploits (1)
- yksivaihde/discourse-CVE-2023-458060★ · 2025-03-14
Security advisories
- discourse/discourse/security/advisories/GHSA-hcgf-hg2g-mw78
- discourse/discourse/commit/2ec25105179199cf80912bf011c18b8b870e1863