CVE-2022-39279

Name: CVE-2022-39279
Creator: NVD / NIST
Published: 2022-10-06T20:15:34.98+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.37%

Last modified Jun 17, 2026

CVE-2022-39279 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. discourse-chat is a plugin for the Discourse message board which adds chat functionality. In versions prior to 0.9 some places render a chat channel's name and description in an unsafe way, allowing staff members to cause an cross site scripting (XSS) attack by inserting unsafe HTML into them. EPSS estimates a 0.37% chance of exploitation in the next 30 days.

Description

discourse-chat is a plugin for the Discourse message board which adds chat functionality. In versions prior to 0.9 some places render a chat channel's name and description in an unsafe way, allowing staff members to cause an cross site scripting (XSS) attack by inserting unsafe HTML into them. Version 0.9 has addressed this issue. Users are advised to upgrade. There are no known workarounds for this issue.

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%

28.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Discourse	Discourse-Chat	< 0.9

References

https://github.com/discourse/discourse-chat/commit/25737733af48e5b9fa60b0561d7fde14bea13ccePatch, Third Party Advisory
https://github.com/discourse/discourse-chat/security/advisories/GHSA-qp62-8m3c-9jgjThird Party Advisory
https://github.com/discourse/discourse-chat/commit/25737733af48e5b9fa60b0561d7fde14bea13ccePatch, Third Party Advisory
https://github.com/discourse/discourse-chat/security/advisories/GHSA-qp62-8m3c-9jgjThird Party Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2022-39279?

How severe is CVE-2022-39279?

CVE-2022-39279 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-2022-39279?

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-2022-39279?

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

Scan your code now

Source: NVD / NIST