CVE-2026-28295 Gvfs: gvfs ftp backend: information disclosure via untrusted pasv responses
A malicious FTP server can force the GVfs client to connect to arbitrary internal endpoints, enabling port scanning and potential access to internal services.
- 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
- Available
What is CVE-2026-28295?
CVE-2026-28295 is a medium-severity server-side request forgery vulnerability in Red Hat Enterprise Linux 10, published on 26 Feb 2026. 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
A flaw was found in the FTP GVfs backend. A malicious FTP server can exploit this vulnerability by providing an arbitrary IP address and port in its passive mode (PASV) response. The client unconditionally trusts this information and attempts to connect to the specified endpoint, allowing the malicious server to probe for open ports accessible from the client's network.
Weakness: CWE-918
Which versions are affected by CVE-2026-28295?
How do I fix CVE-2026-28295?
Apply the vendor's patch.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-28295 being exploited?
There is no known exploitation of CVE-2026-28295 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2026-28295, GHSA-pp79-4qx3-mf4h, OESA-2026-2321, OESA-2026-2322, OESA-2026-2323, OESA-2026-2569 and 1 more.