CVE-2022-46148CWE-79

Discourse allows self-XSS through malicious composer message

High · published November 29, 2022

CVSS v3.1
7.1
EPSS
0%
Percentile
40.6
In the wild
Unconfirmed
What it is

Discourse is an open-source messaging platform. In versions 2.8.10 and prior on the `stable` branch and versions 2.9.0.beta11 and prior on the `beta` and `tests-passed` branches, users composing malicious messages and navigating to drafts page could self-XSS. This vulnerability can lead to a full XSS on sites which have modified or disabled Discourse’s default Content Security Policy. This issue is patched in the latest stable, beta and tests-passed versions of Discourse.

The record
Technical detail
CVSS v3.1
7.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00482 · 40.6th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2022-11-29T00:00Z
EPSS history
Timeline
  • 29 NOV 00:00Z
    Discourse allows self-XSS through malicious composer message
    cvelistv5