What is CVE-2023-43659?

CVE-2023-43659 is a vulnerability in Discourse that allows for Cross-site Scripting attacks via the digest email preview UI.

What software versions are affected by CVE-2023-43659?

CVE-2023-43659 affects Discourse versions up to and including 3.1.1 and version 3.2.0-beta1.

How severe is CVE-2023-43659?

CVE-2023-43659 has a severity rating of 5.4 (high).

How can I fix CVE-2023-43659?

To fix CVE-2023-43659, update your Discourse instance to the 3.1.1 stable release or the 3.2.0.beta1 release.

What is Cross-site Scripting (XSS)?

Cross-site Scripting (XSS) is a security vulnerability that allows attackers to inject malicious scripts into web pages viewed by other users.

Vulnerability/
CVE-2023-43659

high

CWE

16/10/2023

16/9/2024

CVE-2023-43659: Cross-site Scripting via email preview when CSP disabled in Discourse

First published: Mon Oct 16 2023(Updated: )

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.

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

Affected Software	Affected Version	How to fix
Discourse Discourse	<=3.1.1
Discourse Discourse	=3.2.0-beta1

Never miss a vulnerability like this again

Reference Links

Frequently Asked Questions

What is CVE-2023-43659?
CVE-2023-43659 is a vulnerability in Discourse that allows for Cross-site Scripting attacks via the digest email preview UI.
What software versions are affected by CVE-2023-43659?
CVE-2023-43659 affects Discourse versions up to and including 3.1.1 and version 3.2.0-beta1.
How severe is CVE-2023-43659?
CVE-2023-43659 has a severity rating of 5.4 (high).
How can I fix CVE-2023-43659?
To fix CVE-2023-43659, update your Discourse instance to the 3.1.1 stable release or the 3.2.0.beta1 release.
What is Cross-site Scripting (XSS)?
Cross-site Scripting (XSS) is a security vulnerability that allows attackers to inject malicious scripts into web pages viewed by other users.

collector/nvd-api
collector/nvd-index
agent/references
agent/author
agent/type
agent/softwarecombine
collector/mitre-cve
source/MITRE
agent/weakness
agent/title
agent/severity
agent/last-modified-date
agent/tags
agent/first-publish-date
agent/description
agent/event
vendor/discourse
canonical/discourse discourse
version/discourse discourse/3.1.1
version/discourse discourse/3.2.0-beta1

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co

By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.