// For flags

CVE-2023-43659

Cross-site Scripting via email preview when CSP disabled in Discourse

Severity Score

5.4
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track*
*SSVC
Descriptions

Discourse is an open source platform for community discussion. Improper escaping of user input allowed for Cross-site Scripting attacks via the digest email preview UI. This issue only affects sites with CSP disabled. This issue has been patched in the 3.1.1 stable release as well as the 3.2.0.beta1 release. Users are advised to upgrade. Users unable to upgrade should ensure CSP is enabled on the forum.

Discourse es una plataforma de código abierto para el debate comunitario. El escape inadecuado de la entrada del usuario permitió ataques de Cross-Site Scripting a través de la interfaz de usuario de vista previa del resumen del correo electrónico. Este problema sólo afecta a sitios con CSP deshabilitado. Este problema se solucionó en la versión 3.1.1 stable y en la versión 3.2.0.beta1. Se recomienda a los usuarios que actualicen. Los usuarios que no puedan actualizar deben asegurarse de que CSP esté habilitado en el foro.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Track*
Exploitation
None
Automatable
No
Tech. Impact
Total
* Organization's Worst-case Scenario
Timeline
  • 2023-09-20 CVE Reserved
  • 2023-10-16 CVE Published
  • 2024-09-15 EPSS Updated
  • 2024-09-16 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Discourse
Search vendor "Discourse"
 Discourse
Search vendor "Discourse" for product "Discourse"
 <= 3.1.1
Search vendor "Discourse" for product "Discourse" and version " <= 3.1.1"
stable
Affected
Discourse
Search vendor "Discourse"
 Discourse
Search vendor "Discourse" for product "Discourse"
 3.2.0
Search vendor "Discourse" for product "Discourse" and version "3.2.0"
beta1, beta
Affected