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Vulnerability record · CVE-2026-96279 · published 27 September 2026

CVE-2026-96279: Link following vulnerability

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.

6.5 CVSS 3.1 Medium CWE-59 · Link following Received
6.5CVSS 3.1 base score
—EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
27 Sep 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

References

LinkTags
https://access.redhat.com/security/cve/CVE-2026-96279
https://bugzilla.redhat.com/show_bug.cgi?id=2539417
https://github.com/flatpak/flatpak/security/advisories/GHSA-9rww-v4mm-x4jg

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Source: NIST National Vulnerability Database (record CVE-2026-96279), CISA KEV, FIRST EPSS. This page is refreshed as NVD updates the record.