CVE-2025-70842 Cross-site scripting in n/a
An authenticated administrator can upload malicious SVG files to execute JavaScript in the browsers of other users, including unauthenticated visitors.
- 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-2025-70842?
CVE-2025-70842 is a medium-severity cross-site scripting vulnerability in n/a, published on 12 May 2026. 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 Stored Cross-Site Scripting (XSS) vulnerability was discovered in the File Management module of FluentCMS 1.2.3. The flaw allows an authenticated administrator to upload crafted SVG files containing malicious JavaScript code. Once uploaded, the script executes in the browser of any user who accesses the direct URL of the image, including unauthenticated visitors.
Weakness: CWE-79
Which versions are affected by CVE-2025-70842?
How do I fix CVE-2025-70842?
No fix has been published for CVE-2025-70842 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-2025-70842 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-70842 exists.
Sources
Also known as GHSA-7m9c-h5vv-88gq.