CVE-2022-39270

Name: CVE-2022-39270
Creator: NVD / NIST
Published: 2022-10-06T18:16:14.227+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.37%

Last modified Jun 17, 2026

CVE-2022-39270 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. 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. EPSS estimates a 0.37% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.37%

29.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Discourse	Discotoc	< 2.1.0

References

https://github.com/discourse/DiscoTOC/commit/f80c215a283cd045d2a371403e6eba88b2911192Patch, Third Party Advisory
https://github.com/discourse/DiscoTOC/security/advisories/GHSA-m44p-w923-w32hThird Party Advisory
https://github.com/discourse/DiscoTOC/commit/f80c215a283cd045d2a371403e6eba88b2911192Patch, Third Party Advisory
https://github.com/discourse/DiscoTOC/security/advisories/GHSA-m44p-w923-w32hThird Party Advisory

Timeline

Published: Oct 6, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-39270?

How severe is CVE-2022-39270?

CVE-2022-39270 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.37% probability of exploitation in the next 30 days.

How do I fix CVE-2022-39270?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-39270?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST