CVE-2024-5521 Cross-Site Scripting stored in Alkacon OpenCMS
Attackers with specific roles can upload malicious SVG files to execute JavaScript in other users' browsers, potentially leading to session hijacking.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2024-5521?
CVE-2024-5521 is a medium-severity cross-site scripting vulnerability in Alkacon OpenCMS, published on 30 May 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2024-5521?
It affects 1 product.
Products include Alkacon Opencms.
How do I fix CVE-2024-5521?
No fix has been published for CVE-2024-5521 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2024-5521 being exploited?
There is no known exploitation of CVE-2024-5521 in the wild and no public exploit code.