What is CVE-2022-31184?

CVE-2022-31184 is a medium-severity vulnerability in Discourse, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2022-08-01.

How severe is CVE-2022-31184?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in Discourse

CVE-2022-31184

Discourse is the an open source discussion platform. In affected versions an email activation route can be abused to send mass spam emails. A fix has been included in the latest stable, beta and tests-passed versions of Discourse which rate limits emails. Users are advised to upgrade. Users unable to upgrade should manually rate limit email.

Published 2022-08-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.007 (50.5th percentile), scored 2026-10-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000

Affected products

Discourse — versions < 2.8.7, 2.9.0, < 2.9.0.beta8

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

github.com/discourse/discourse/security/advisories/GHSA-m5w9-8gp8-2hrf (Third Party Advisory)
github.com/discourse/discourse/commit/af1cb735db7fb73217b85d22dbadd1bc824ac0b0 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-31184?: CVE-2022-31184 is a medium-severity vulnerability in Discourse, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2022-08-01.
How severe is CVE-2022-31184?: Medium severity. CVSS v3 base score is 6.5 out of 10.