CVE-2022-31059

Discourse Calendar Event names susceptible to Cross-site Scripting

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 Calendar is a calendar plugin for Discourse, an open-source messaging app. Prior to version 1.0.1, parsing and rendering of Event names can be susceptible to cross-site scripting (XSS) attacks. This vulnerability only affects sites which have modified or disabled Discourse’s default Content Security Policy. This issue is patched in version 1.0.1 of the Discourse Calendar plugin. As a workaround, ensure that the Content Security Policy is enabled, and has not been modified in a way which would make it more vulnerable to XSS attacks.

Discourse Calendar es un plugin de calendario para Discourse, una aplicación de mensajería de código abierto. En versiones anteriores a 1.0.1, el análisis y la representación de los nombres de los eventos pueden ser susceptibles de ataques de tipo cross-site scripting (XSS). Esta vulnerabilidad sólo afecta a sitios que han modificado o deshabilitado la Política de Seguridad de Contenidos por defecto de Discourse. Este problema está parcheado en versión 1.0.1 del plugin Calendario de Discourse. Como mitigación, asegúrese de que la política de seguridad de contenidos está habilitada y no ha sido modificada de forma que sea más vulnerable a ataques de tipo XSS

*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

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

High

Authentication

Single

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-05-18 CVE Reserved
2022-06-14 CVE Published
2024-01-05 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 (3)

URL	Tag	Source
https://github.com/discourse/discourse-calendar/security/advisories/GHSA-c783-x9vm-xxp5	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://github.com/discourse/discourse-calendar/commit/2719b9e81994e961bf8c4e12b4556dc9777dd62f	2023-11-07
https://github.com/discourse/discourse-calendar/pull/280	2023-11-07

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 Calendar Search vendor "Discourse" for product "Discourse Calendar"				< 1.0.1 Search vendor "Discourse" for product "Discourse Calendar" and version " < 1.0.1"		discourse		Affected