What is CVE-2022-23548?

CVE-2022-23548 is a medium-severity vulnerability in Discourse, classified under Inefficient Regular Expression Complexity. CVSS score: 6.5/10. Published 2023-01-05.

How severe is CVE-2022-23548?

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

Vulnerability in Discourse

CVE-2022-23548

Discourse is an option source discussion platform. Prior to version 2.8.14 on the `stable` branch and version 2.9.0.beta16 on the `beta` and `tests-passed` branches, parsing posts can be susceptible to regular expression denial of service (ReDoS) attacks. This issue is patched in versions 2.8.14 and 2.9.0.beta16. There are no known workarounds.

Vulnerability class: ReDoS (Regular Expression Denial of Service)

EPSS: 0.007 (50.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

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

Affected products

Discourse — versions < 2.8.14, >= 2.9.0.beta0, < 2.9.0.beta16, 3.0.0

Weakness classification (CWE)

CWE-1333 — Inefficient Regular Expression Complexity

References

security-advisories@github.com (Third Party Advisory)
security-advisories@github.com (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-23548?: CVE-2022-23548 is a medium-severity vulnerability in Discourse, classified under Inefficient Regular Expression Complexity. CVSS score: 6.5/10. Published 2023-01-05.
How severe is CVE-2022-23548?: Medium severity. CVSS v3 base score is 6.5 out of 10.