CVE-2023-45806
Discourse vulnerable to DoS via Regexp Injection in Full Name
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.
How to fix CVE-2023-45806
To remediate CVE-2023-45806, upgrade the affected package to a fixed version below.
- —upgrade to 3.2.0 or later
Is CVE-2023-45806 being exploited?
Low — EPSS is 4.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 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 |