CVE-2026-96279
Flatpak: flatpak: path traversal issue in oci archive extraction via hardlinks
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.
INFO
Published Date :
Sept. 27, 2026, 8:16 p.m.
Last Modified :
Sept. 27, 2026, 9:17 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-96279
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update Flatpak to the latest version.
- Disable OCI registry access if not required.
- Use trusted OCI registries only.
- Review file permissions on sensitive files.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-96279.
| URL | Resource |
|---|---|
| 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 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-96279 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-96279
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-96279 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-96279 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
Sep. 27, 2026
Action Type Old Value New Value Added Affected Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/96xxx/CVE-2026-96279.json">CVE-2026-96279</a> -
New CVE Received by [email protected]
Sep. 27, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N Added CWE CWE-59 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/96xxx/CVE-2026-96279.json">CVE-2026-96279</a> Added Reference https://access.redhat.com/security/cve/CVE-2026-96279 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2539417 Added Reference https://github.com/flatpak/flatpak/security/advisories/GHSA-9rww-v4mm-x4jg