CVE-2023-30606
MEDIUM4.9EPSS 0.34%Multisite denial of service through unsanitized dynamic dispatch to SiteSetting in Discourse
Published: 3/6/2024Modified: 10/15/2025
Description
Discourse is an open source platform for community discussion. In affected versions a user logged as an administrator can call arbitrary methods on the `SiteSetting` class, notably `#clear_cache!` and `#notify_changed!`, which when done on a multisite instance, can affect the entire cluster resulting in a denial of service. Users not running in multisite environments are not affected. This issue is patched in the latest stable, beta and tests-passed versions of Discourse. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Affected packages (1)
- Bitnami/discoursefrom 0, < 3.1.0 | from 0, <= 3.0.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.9 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H |