CVE-2026-48537 GFI Archiver < 15.13 Stored XSS via FileArchiveAssistantWizard.aspx
Authenticated attackers can inject arbitrary scripts into GFI Archiver settings, leading to code execution or account takeover when viewed by other users.
- 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-2026-48537?
CVE-2026-48537 is a medium-severity cross-site scripting vulnerability in GFI Archiver, published on 23 Jul 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
GFI Archiver before 15.13 contains a stored cross-site scripting vulnerability in the File Archive Assistant configuration that allows authenticated attackers to inject arbitrary web script or HTML via the excluded extensions parameter to /Archiver/FileArchiveAssistantWizard.aspx. The injected payload is stored by FileArchiveAssistantWizard.btnSave_Click() without output encoding and is executed in the browsers of users who subsequently view the File Archive Assistant settings page.
Weakness: CWE-79
Which versions are affected by CVE-2026-48537?
How do I fix CVE-2026-48537?
No fix has been published for CVE-2026-48537 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-2026-48537 being exploited?
There is no known exploitation of CVE-2026-48537 in the wild and no public exploit code.
Sources
Also known as GHSA-4448-cm9w-pfq8.