What is CVE-2022-39279?

CVE-2022-39279 is a medium-severity vulnerability in Discourse Discourse-Chat, classified under Cross-site Scripting. CVSS score: 4.3/10. Published 2022-10-06.

How severe is CVE-2022-39279?

Medium severity. CVSS v3 base score is 4.3 out of 10.

XSS in Discourse Discourse-Chat

CVE-2022-39279

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.004 (31.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:L.

Affected products

Discourse Discourse-chat — versions < 0.9

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-2022-39279?: CVE-2022-39279 is a medium-severity vulnerability in Discourse Discourse-Chat, classified under Cross-site Scripting. CVSS score: 4.3/10. Published 2022-10-06.
How severe is CVE-2022-39279?: Medium severity. CVSS v3 base score is 4.3 out of 10.