What is CVE-2022-39270?

CVE-2022-39270 is a medium-severity vulnerability in Discourse Discotoc, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2022-10-06.

How severe is CVE-2022-39270?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Discourse Discotoc

CVE-2022-39270

DiscoTOC is a Discourse theme component that generates a table of contents for topics. Users that can create topics in TOC-enabled categories (and have sufficient trust level - configured in component's settings) are able to inject arbitrary HTML on that topic's page. The issue has been fixed on the `main` branch. Admins can update the theme component through the admin UI (Customize -> Themes -> Components -> DiscoTOC -> Check for Updates). Alternatively, admins can temporarily disable the DiscoTOC theme component.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.004 (31.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Discourse Discotoc — versions < 2.1.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

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

Frequently asked questions

What is CVE-2022-39270?: CVE-2022-39270 is a medium-severity vulnerability in Discourse Discotoc, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2022-10-06.
How severe is CVE-2022-39270?: Medium severity. CVSS v3 base score is 5.4 out of 10.