Vulnerability identifier: #VU99234

Vulnerability risk: Low

CVSSv3.1: 5.6 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-48927

CWE-ID: CWE-434

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Umbraco CMS
Web applications / CMS

Vendor: Umbraco

Description

The vulnerability allows a remote attacker to perform XSS attacks.

The vulnerability exists due to the application allows to upload SVG files to the server. A remote user can upload a specially crafted SVG file with an arbitrary JavaScript code inside and execute ti in the victim's browser in the security context of the website once the image is viewed.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Umbraco CMS: 13.0.0 - 13.5.1, 12.0.0 - 12.3.10, 11.0.0 - 11.5.0, 10.1.0 - 10.8.6

---

External links
http://github.com/umbraco/Umbraco-CMS/releases/tag/release-13.5.2
http://github.com/umbraco/Umbraco-CMS/releases/tag/release-10.8.7
http://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-5955-cwv4-h7qh

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.