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Fencer Vulns
medium 4.3

CVE-2026-28295 json

Gvfs: gvfs ftp backend: information disclosure via untrusted pasv responses

published 2026-02-26 8 mo ago modified 2026-11-06 2 d ago also EUVD-2026-8860

cvss
4.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 12%
public exploits
0
none known

Summary

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.

Patch / fix

  • gvfs Debian 12 1.50.3-1+deb12u1
  • gvfs Debian 13 1.57.2-2+deb13u1
  • gvfs Debian 14 1.59.90-1

debian advisories DEBIAN-CVE-2026-28295

  • gvfs Ubuntu 22.04 LTS 1.48.2-0ubuntu1.1
  • gvfs Ubuntu 24.04 LTS 1.54.4-0ubuntu1~24.04.2
  • gvfs Ubuntu 25.10 1.57.2-2ubuntu5.1

ubuntu advisories UBUNTU-CVE-2026-28295

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • gvfs SLES for SAP applications 16.0, SLES 16.0 1.59.90-160000.1.1
  • gnome-online-accounts SLES for SAP applications 16.0, SLES 16.0 3.58.0-160000.1.1
  • gvfs SLES for SAP 15 SP6, SLES 15 SP6-LTSS, SLE Module for Desktop Applications 15 SP7 +1 more 1.52.2-150600.3.3.1
  • gvfs SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 1.48.2-150400.4.9.1
  • gvfs SLES LTSS Extended Security 12 SP5, SLES 12 SP5-LTSS 1.28.3-18.9.1

suse advisories SUSE-SU-2026:20988-1SUSE-SU-2026:0960-1SUSE-SU-2026:0923-1SUSE-SU-2026:0916-1

  • gvfs openSUSE Leap 16.0 1.59.90-160000.1.1
  • gnome-online-accounts openSUSE Leap 16.0 3.58.0-160000.1.1
  • gvfs openSUSE Tumbleweed 1.58.2-1.1

opensuse advisories openSUSE-SU-2026:20451-1openSUSE-SU-2026:10275-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-28295 updated cvss 4.3

gvfs: GVfs FTP backend: Information disclosure via untrusted PASV responses

  • Red Hat Enterprise Linux 6 gvfs, gvfs-afc, gvfs-smb, gvfs-fuse, gvfs-archive, gvfs-gphoto2, +1 more Red Hat Enterprise Linux 7 gvfs, gvfs-afc, gvfs-afp, gvfs-goa, gvfs-mtp, gvfs-smb, +5 more Red Hat Enterprise Linux 8 gvfs, gvfs-afc, gvfs-afp, gvfs-goa, gvfs-mtp, gvfs-smb, +4 more Red Hat Enterprise Linux 9 gvfs, gvfs-goa, gvfs-mtp, gvfs-smb, gvfs-fuse, gvfs-client, +1 more Red Hat Enterprise Linux 10 gvfs
    affected: workaround, no fix available “Fix deferred”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
8 mo ago

Exploit prediction

0.22% chance of exploitation in the next 30 days, higher than 12% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Affected products

  • Red Hat Red Hat Enterprise Linux 10
  • Red Hat Red Hat Enterprise Linux 6
  • Red Hat Red Hat Enterprise Linux 7
  • Red Hat Red Hat Enterprise Linux 8
  • Red Hat Red Hat Enterprise Linux 9

Classification

Weakness
  • CWE-918 Server-Side Request Forgery

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.