CVE-2024-47772CWE-79

Cross-site Scripting (XSS) via chat excerpts when content security policy (CSP) disabled in Discourse

Medium · published October 7, 2024

CVSS v3.1
6.5
EPSS
0%
Percentile
24.4
In the wild
Unconfirmed
What it is

Discourse is an open source platform for community discussion. An attacker can execute arbitrary JavaScript on users' browsers by sending a maliciously crafted chat message and replying to it. This issue only affects sites with CSP disabled. This problem is patched in the latest version of Discourse. All users are advised to upgrade. Users unable to upgrade should ensure CSP is enabled on the forum. Users who do upgrade should also consider enabling a CSP as well as a proactive measure.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00326 · 24.4th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2024-10-07T20:50Z
EPSS history
Timeline
  • 07 OCT 20:50Z
    Cross-site Scripting (XSS) via chat excerpts when content security policy (CSP) disabled in Discourse
    cvelistv5