SSRF in Discourse

CVE-2024-37157

Discourse is an open-source discussion platform. Prior to version 3.2.3 on the `stable` branch and version 3.3.0.beta4 on the `beta` and `tests-passed` branches, a malicious actor could get the FastImage library to redirect requests to an internal Discourse IP. This issue is patched in version 3.2.3 on the `stable` branch and version 3.3.0.beta4 on the `beta` and `tests-passed` branches. No known workarounds are available.

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.003 (27.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:L.

Affected products

  • Discourse — versions stable < 3.2.3, tests-passed < 3.3.0.beta4, beta < 3.3.0.beta4

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2024-37157?
CVE-2024-37157 is a medium-severity vulnerability in Discourse, classified under Server-Side Request Forgery (SSRF). CVSS score: 6.4/10. Published 2024-07-03.
How severe is CVE-2024-37157?
Medium severity. CVSS v3 base score is 6.4 out of 10.