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CVE-2023-49279

3.7 · LOW

Umbraco is an ASP.NET content management system (CMS).

Published Dec 12, 2023CWE-79EPSS 0.39%

Overview

CVE-2023-49279 is a low-severity vulnerability. It was published on December 12, 2023 and has a CVSS 3.1 base score of 3.7 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.7, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

Umbraco is an ASP.NET content management system (CMS). Starting in version 7.0.0 and prior to versions 7.15.11, 8.18.9, 10.7.0, 11.5.0, and 12.2.0, a user with access to the backoffice can upload SVG files that include scripts. If the user can trick another user to load the media directly in a browser, the scripts can be executed. Versions 7.15.11, 8.18.9, 10.7.0, 11.5.0, and 12.2.0 contain a patch for this issue. Some workarounds are available. Implement the server side file validation or serve all media from an different host (e.g cdn) than where Umbraco is hosted.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refdocs.umbraco.com/umbraco-cms/reference/security/serverside-file-validationGitHubgithub.com/umbraco/Umbraco-CMS/security/advisories/GHSA-6xmx-85x3-4cv2Refdocs.umbraco.com/umbraco-cms/reference/security/serverside-file-validationGitHubgithub.com/umbraco/Umbraco-CMS/security/advisories/GHSA-6xmx-85x3-4cv2

How CyberStrike helps

Frequently asked questions

What is CVE-2023-49279?

CVE-2023-49279 is a low-severity vulnerability. It was published on December 12, 2023 and has a CVSS 3.1 base score of 3.7 (LOW).

How severe is CVE-2023-49279?

This vulnerability has a CVSS 3.1 base score of 3.7, rated LOW. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2023-49279?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-49279?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-49279 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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