CVE-2022-46148

Discourse allows self-XSS through malicious composer message

Severity Score

5.4

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

Discourse es una plataforma de mensajería de código abierto. En las versiones 2.8.10 y anteriores en la rama "stable" y en las versiones 2.9.0.beta11 y anteriores en las ramas "beta" y "tests-passed", los usuarios que redactaban mensajes maliciosos y navegaban a la página de borradores podían realizado un auto-XSS. Esta vulnerabilidad puede provocar un XSS completo en sitios que han modificado o deshabilitado la Política de Seguridad de Contenido predeterminada de Discourse. Este problema está solucionado en las últimas versiones stable, beta y tests-passed de Discourse.

*Credits: N/A

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

High

Privileges Required

Low

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-11-28 CVE Reserved
2022-11-29 CVE Published
2024-06-21 EPSS Updated
2024-08-03 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

References (1)

URL	Tag	Source
https://github.com/discourse/discourse/security/advisories/GHSA-c5h6-6gg5-84fh	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

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"				<= 2.8.10 Search vendor "Discourse" for product "Discourse" and version " <= 2.8.10"		-		Affected
Discourse Search vendor "Discourse"		Discourse Search vendor "Discourse" for product "Discourse"				2.9.0 Search vendor "Discourse" for product "Discourse" and version "2.9.0"		beta1		Affected
Discourse Search vendor "Discourse"		Discourse Search vendor "Discourse" for product "Discourse"				2.9.0 Search vendor "Discourse" for product "Discourse" and version "2.9.0"		beta10		Affected
Discourse Search vendor "Discourse"		Discourse Search vendor "Discourse" for product "Discourse"				2.9.0 Search vendor "Discourse" for product "Discourse" and version "2.9.0"		beta11		Affected
Discourse Search vendor "Discourse"		Discourse Search vendor "Discourse" for product "Discourse"				2.9.0 Search vendor "Discourse" for product "Discourse" and version "2.9.0"		beta2		Affected
Discourse Search vendor "Discourse"		Discourse Search vendor "Discourse" for product "Discourse"				2.9.0 Search vendor "Discourse" for product "Discourse" and version "2.9.0"		beta3		Affected
Discourse Search vendor "Discourse"		Discourse Search vendor "Discourse" for product "Discourse"				2.9.0 Search vendor "Discourse" for product "Discourse" and version "2.9.0"		beta4		Affected
Discourse Search vendor "Discourse"		Discourse Search vendor "Discourse" for product "Discourse"				2.9.0 Search vendor "Discourse" for product "Discourse" and version "2.9.0"		beta5		Affected
Discourse Search vendor "Discourse"		Discourse Search vendor "Discourse" for product "Discourse"				2.9.0 Search vendor "Discourse" for product "Discourse" and version "2.9.0"		beta6		Affected
Discourse Search vendor "Discourse"		Discourse Search vendor "Discourse" for product "Discourse"				2.9.0 Search vendor "Discourse" for product "Discourse" and version "2.9.0"		beta7		Affected
Discourse Search vendor "Discourse"		Discourse Search vendor "Discourse" for product "Discourse"				2.9.0 Search vendor "Discourse" for product "Discourse" and version "2.9.0"		beta8		Affected