CVE-2026-48534 GFI Archiver < 15.13 Stored XSS via ImapServerWizard.aspx
Authenticated attackers can inject malicious scripts into the IMAP server configuration, leading to script execution in other users' browsers.
- 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-2026-48534?
CVE-2026-48534 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 IMAP Server configuration that allows authenticated attackers to inject arbitrary web script or HTML via the server URL parameter to /Archiver/ImapServerWizard.aspx. The injected payload is stored by ImapServerWizard.SaveAllConfigSettings() without output encoding and is executed in the browsers of users who subsequently view the IMAP Server configuration page.
Weakness: CWE-79
Which versions are affected by CVE-2026-48534?
How do I fix CVE-2026-48534?
No fix has been published for CVE-2026-48534 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-2026-48534 being exploited?
There is no known exploitation of CVE-2026-48534 in the wild and no public exploit code.
Sources
Also known as GHSA-pqjc-327p-9x24.