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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.007 (52.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.5% 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 < 2.8.14, >= 2.9.0.beta0, < 2.9.0.beta16, 3.0.0
Weakness classification (CWE)
References
- github.com/discourse/discourse/security/advisories/GHSA-7rw2-f4x7-7pxf (Third Party Advisory)
- github.com/discourse/discourse/pull/19737 (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.