What is CVE-2023-23621?

CVE-2023-23621 is a high-severity vulnerability in Discourse, classified under Inefficient Regular Expression Complexity. CVSS score: 8.6/10. Published 2023-01-28.

How severe is CVE-2023-23621?

High severity. CVSS v3 base score is 8.6 out of 10.

Vulnerability in Discourse

CVE-2023-23621

Discourse is an open-source discussion platform. Prior to version 3.0.1 on the `stable` branch and version 3.1.0.beta2 on the `beta` and `tests-passed` branches, a malicious user can cause a regular expression denial of service using a car…

Vulnerability class: ReDoS (Regular Expression Denial of Service)

EPSS: 0.009 (54.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.

Affected products

Discourse — versions 2.4.0, 3.1.0, < 3.0.1

Weakness classification (CWE)

CWE-1333 — Inefficient Regular Expression Complexity

References

security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
security-advisories@github.com (Patch, x_refsource_MISC, Issue Tracking)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2023-23621?: CVE-2023-23621 is a high-severity vulnerability in Discourse, classified under Inefficient Regular Expression Complexity. CVSS score: 8.6/10. Published 2023-01-28.
How severe is CVE-2023-23621?: High severity. CVSS v3 base score is 8.6 out of 10.