Resource exhaustion in Discourse

CVE-2024-21655

Discourse is a platform for community discussion. For fields that are client editable, limits on sizes are not imposed. This allows a malicious actor to cause a Discourse instance to use excessive disk space and also often excessive bandwidth. The issue is patched 3.1.4 and 3.2.0.beta4.

Vulnerability class: DoS (Denial of Service)

Published · last modified .

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.006 (44.8th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 44.8% 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-2024-21655: held from 0.006 to 0.006.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

  • Discourse — versions >= 3.2.0beta1, < 3.2.0.beta4, 3.2.0, < 3.1.4

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2024-21655?
CVE-2024-21655 is a medium-severity vulnerability in Discourse, classified under Uncontrolled Resource Consumption. CVSS score: 4.3/10. Published 2024-01-12.
How severe is CVE-2024-21655?
Medium severity. CVSS v3 base score is 4.3 out of 10.