CVE-2023-22454 HIGH

CVE-2023-22454: Discourse vulnerable to Cross-site Scripting through pending post titles 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

8.0/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction Required
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/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, pending post titles can be used for cross-site scripting attacks. Pending posts can be created by unprivileged users when a category has the "require moderator approval of all new topics" setting set. This vulnerability can lead to a full XSS on sites which have modified or disabled Discourse’s default Content Security Policy. A patch is available in versions 2.8.14 and 3.0.0.beta16.

Key dates

02Disclosure timeline

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