What is the vulnerability ID for this issue?

The vulnerability ID for this issue is CVE-2023-43658.

What is the severity of CVE-2023-43658?

The severity of CVE-2023-43658 is high with a CVSS score of 6.1.

What is the impact of this vulnerability?

The impact of this vulnerability is Cross-site Scripting (XSS) within the 'email preview' UI when a site has CSP disabled.

How can I fix CVE-2023-43658?

To fix CVE-2023-43658, it is recommended to upgrade dicourse-calendar plugin to the latest version that includes the fix.

Vulnerability/
CVE-2023-43658

high

CWE

16/10/2023

16/9/2024

CVE-2023-43658: Improper escaping of user input in discourse-calendar

First published: Mon Oct 16 2023(Updated: )

dicourse-calendar is a plugin for the Discourse messaging platform which adds the ability to create a dynamic calendar in the first post of a topic. Improper escaping of event titles could lead to Cross-site Scripting (XSS) within the 'email preview' UI when a site has CSP disabled. Having CSP disabled is a non-default configuration, so the vast majority of sites are unaffected. This problem is resolved in the latest version of the discourse-calendar plugin. Users are advised to upgrade. Users unable to upgrade should ensure CSP is enabled on the forum.

Credit: security-advisories@github.com security-advisories@github.com

Affected Software	Affected Version	How to fix
Discourse Discourse Calendar	<=2023-10-16

Remedy

https://github.com/discourse/discourse-calendar/commit/9788310906febb36822d6823d14f1059c39644de

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Reference Links

Frequently Asked Questions

What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2023-43658.
What is the severity of CVE-2023-43658?
The severity of CVE-2023-43658 is high with a CVSS score of 6.1.
What is dicourse-calendar?
dicourse-calendar is a plugin for the Discourse messaging platform which adds the ability to create a dynamic calendar in the first post of a topic.
What is the impact of this vulnerability?
The impact of this vulnerability is Cross-site Scripting (XSS) within the 'email preview' UI when a site has CSP disabled.
How can I fix CVE-2023-43658?
To fix CVE-2023-43658, it is recommended to upgrade dicourse-calendar plugin to the latest version that includes the fix.

collector/nvd-api
collector/nvd-index
agent/author
agent/type
agent/softwarecombine
collector/mitre-cve
source/MITRE
agent/title
agent/references
agent/last-modified-date
agent/remedy
agent/severity
agent/weakness
agent/tags
agent/description
agent/first-publish-date
agent/event
vendor/discourse
canonical/discourse discourse calendar
version/discourse discourse calendar/2023-10-16

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