CVE-2023-22856 Stored cross-site scripting in BlogEngine.NET version 3.3.8.0

High 8.5 Published 6 Mar 2023 Updated 5 Mar 2025

Attackers can inject arbitrary JavaScript via file uploads, executing code in the context of blog visitors.

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-2023-22856?

CVE-2023-22856 is a high-severity cross-site scripting vulnerability in BlogEngine.NET, published on 6 Mar 2023. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A stored Cross-site Scripting (XSS) vulnerability in BlogEngine.NET 3.3.8.0, allows injection of arbitrary JavaScript in the security context of a blog visitor through an upload of a specially crafted file.

Weakness: CWE-79

Which versions are affected by CVE-2023-22856?

It affects 1 product.

Products include Blogengine Blogengine.net.

How do I fix CVE-2023-22856?

No fix has been published for CVE-2023-22856 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-2023-22856 being exploited?

There is no known exploitation of CVE-2023-22856 in the wild and no public exploit code.

Sources

Also known as GHSA-3f3v-9mp5-jfjc.