CVE-2023-22455CWE-79

Discourse vulnerable to Cross-site Scripting through tag descriptions

Medium · published January 5, 2023

CVSS v3.1
6.8
EPSS
1%
Percentile
41.9
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00500 · 41.9th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2023-01-05T20:02Z
EPSS history
Timeline
  • 05 JAN 20:02Z
    Discourse vulnerable to Cross-site Scripting through tag descriptions
    cvelistv5