CVE-2026-96279CWE-59

CVE-2026-96279

Medium · published September 28, 2026

CVSS v3.1
6.5
EPSS
1%
Percentile
49.4
In the wild
Unconfirmed
What it is

A malicious OCI registry can hardlink arbitrary host files into the extraction directory when a user installs or updates a Flatpak application from an OCI remote, allowing disclosure of arbitrary host file contents. For system-wide installs running as root, this includes sensitive files such as /etc/shadow.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00628 · 49.4th percentile
Weakness
CWE-59 · Improper Link Resolution Before File Access ('Link Following')
Published
2026-09-28T00:16Z
References (3)
https://access.redhat.com/security/cve/CVE-2026-96279 · [email protected]https://bugzilla.redhat.com/show_bug.cgi?id=2539417 · [email protected]https://github.com/flatpak/flatpak/security/advisories/GHSA-9rww-v4mm-x4jg · [email protected]
EPSS history
Timeline
  • 29 SEP 03:28Z
    EPSS moved — → 1%
    epss
  • 27 SEP 19:49Z
    Flatpak: flatpak: path traversal issue in oci archive extraction via hardlinks
    cvelistv5