Vulnerability in Discourse

CVE-2023-30606

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.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 4.2 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (30.4th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 30.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2023-30606: held from 0.004 to 0.004.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

  • Discourse — versions beta: < 3.1.0.beta3, 3.1.0, stable: < 3.0.2

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2023-30606?
CVE-2023-30606 is a medium-severity vulnerability in Discourse, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 4.2/10. Published 2023-04-18.
How severe is CVE-2023-30606?
Medium severity. CVSS v3 base score is 4.2 out of 10.