CVE-2025-32371 Unexpected external content may be displayed in DNN ImageHandler
Attackers can inject text into images via crafted URLs, potentially misleading users who trust the domain.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-32371?
CVE-2025-32371 is a medium-severity cross-site scripting vulnerability in Dnnsoftware Dotnetnuke, published on 9 Apr 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. A url could be crafted to the DNN ImageHandler to render text from a querystring parameter. This text would display in the resulting image and a user that trusts the domain might think that the information is legitimate. This vulnerability is fixed in 9.13.4.
Weakness: CWE-451
Which versions are affected by CVE-2025-32371?
It affects 1 product.
Products include Dnnsoftware Dotnetnuke.
How do I fix CVE-2025-32371?
No fix has been published for CVE-2025-32371 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-2025-32371 being exploited?
There is no known exploitation of CVE-2025-32371 in the wild and no public exploit code.
Other vulnerabilities in Dnnsoftware Dotnetnuke
- CVE-2017-9822 DotNetNuke (DNN) Remote Code Execution
- CVE-2018-15811 DotNetNuke (DNN) Inadequate Encryption Strength
- CVE-2018-18325 DotNetNuke (DNN) Inadequate Encryption Strength
- CVE-2025-64095 DNN Insufficient Access Control - Image Upload allows for Site Content Overwrite
- CVE-2006-3601 Privilege escalation in n/a
Sources
Also known as GHSA-2rrc-g594-rhqw.