CVE-2023-5793 flusity CMS Dashboard customblock.php loadCustomBlocCreateForm cross site scripting

Low 3.5 Published 26 Oct 2023 Updated 12 Jun 2025

Remote attackers can inject malicious scripts via the customblock_place argument in flusity CMS dashboard, potentially leading to session hijacking or code execution.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2023-5793?

CVE-2023-5793 is a low-severity cross-site scripting vulnerability in flusity CMS, published on 26 Oct 2023. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

A vulnerability was found in flusity CMS and classified as problematic. This issue affects the function loadCustomBlocCreateForm of the file /core/tools/customblock.php of the component Dashboard. The manipulation of the argument customblock_place leads to cross site scripting. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. This product does not use versioning. This is why information about affected and unaffected releases are unavailable. The patch is named 81252bc764e1de2422e79e36194bba1289e7a0a5. It is recommended to apply a patch to fix this issue. The associated identifier of this vulnerability is VDB-243599.

Weakness: CWE-79

Which versions are affected by CVE-2023-5793?

It affects 1 product.

Products include Flusity Flusity.

How do I fix CVE-2023-5793?

No fix has been published for CVE-2023-5793 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-2023-5793 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-5793 exists.

Sources

Also known as GHSA-h2q3-xfj7-f8w8.