CVE-2022-39270 MEDIUM

CVE-2022-39270: Arbitrary HTML injection in table-of-contents theme component in DiscoTOC

Vendor Discourse

Product DiscoTOC

Weakness CWE-79 · XSS

Published October 6, 2022

Last update April 23, 2025

View on NVD All CVEs

CVSS base score

5.4/10

Attack vector Network

Attack complexity Low

Privileges required Low

User interaction Required

Confidentiality Low

Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

October 6, 2022 CVE published

April 23, 2025 Record updated

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2022-39270 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/79.html

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