CVE-2023-22455 MEDIUM

CVE-2023-22455: Discourse vulnerable to Cross-site Scripting through tag descriptions

Vendor Discourse
Product discourse
Weakness CWE-79 · XSS
Published January 5, 2023
Last update March 10, 2025
View on NVD All CVEs

CVSS base score

6.8/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction Required
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

Discourse is an option source discussion platform. Prior to version 2.8.14 on the `stable` branch and version 3.0.0.beta16 on the `beta` and `tests-passed` branches, tag descriptions, which can be updated by moderators, can be used for cross-site scripting attacks. This vulnerability can lead to a full XSS on sites which have modified or disabled Discourse’s default Content Security Policy. Versions 2.8.14 and 3.0.0.beta16 contain a patch.

Key dates

02Disclosure timeline

January 5, 2023 CVE published
March 10, 2025 Record updated