CVE-2024-5521

Cross-Site Scripting stored in Alkacon OpenCMS

Description

Two Cross-Site Scripting vulnerabilities have been discovered in Alkacon's OpenCMS affecting version 16, which could allow a user having the roles of gallery editor or VFS resource manager will have the permission to upload images in the .svg format containing JavaScript code. The code will be executed the moment another user accesses the image.

Remediation

Solution:

  • The Cross-Site Scripting vulnerability through the “title” field has been fixed in version 17. However, the vendor has stated that the Cross-Site Scripting vulnerability through images in .svg format will not be fixed because filtering the JavaScript code of .svg files could bring unwanted effects.

Category

6.4
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.10%
Third-Party Advisory incibe.es
Affected: Alkacon OpenCMS
Published at:
Updated at:

References

Link Tags
https://www.incibe.es/en/incibe-cert/notices/aviso/cross-site-scripting-stored-alkacon-opencms third party advisory

Frequently Asked Questions

What is the severity of CVE-2024-5521?
CVE-2024-5521 has been scored as a medium severity vulnerability.
How to fix CVE-2024-5521?
To fix CVE-2024-5521: The Cross-Site Scripting vulnerability through the “title” field has been fixed in version 17. However, the vendor has stated that the Cross-Site Scripting vulnerability through images in .svg format will not be fixed because filtering the JavaScript code of .svg files could bring unwanted effects.
Is CVE-2024-5521 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-5521 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-5521?
CVE-2024-5521 affects Alkacon OpenCMS.
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