A malicious or compromised Flatpak repository can write attacker-controlled content to arbitrary locations on the host filesystem via extract_extra_data(). On system installs, the write happens as root. Two issues combine: `files/extra` is resolved via path operations that follow symlinks, and blob names from `xa.extra-data-sources` are not sanitized against `..` traversal.

Project Subscriptions

Vendors Products
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Enterprise Linux Subscribe
Enterprise Linux Eus Subscribe
Rhel Aus Subscribe
Rhel E4s Subscribe
Rhel Els Subscribe
Rhel Eus Subscribe
Rhel Eus Long Life Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.


Workaround

Avoid installing Flatpak extensions from non-trusted sources.

History

Thu, 05 Nov 2026 19:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel Aus
Redhat rhel Eus Long Life
CPEs cpe:/a:redhat:rhel_aus:8.6::appstream
cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
Vendors & Products Redhat rhel Aus
Redhat rhel Eus Long Life
References

Thu, 05 Nov 2026 00:30:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel Els
CPEs cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:rhel_els:7
Vendors & Products Redhat rhel Els

Mon, 02 Nov 2026 12:45:00 +0000

Type Values Removed Values Added
First Time appeared Redhat enterprise Linux Eus
CPEs cpe:/o:redhat:enterprise_linux_eus:10.0
Vendors & Products Redhat enterprise Linux Eus
References

Thu, 29 Oct 2026 19:45:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:rhel_e4s:9.2::appstream
References

Tue, 27 Oct 2026 04:30:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel E4s
CPEs cpe:/a:redhat:rhel_e4s:9.4::appstream
Vendors & Products Redhat rhel E4s
References

Mon, 26 Oct 2026 02:45:00 +0000

Type Values Removed Values Added
First Time appeared Redhat rhel Eus
CPEs cpe:/a:redhat:rhel_eus:9.6::appstream
cpe:/a:redhat:rhel_eus:9.6::crb
Vendors & Products Redhat rhel Eus
References

Mon, 12 Oct 2026 16:45:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:8 cpe:/a:redhat:enterprise_linux:8::appstream
cpe:/a:redhat:enterprise_linux:8::crb
References

Mon, 12 Oct 2026 08:15:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:9 cpe:/a:redhat:enterprise_linux:9::appstream
cpe:/a:redhat:enterprise_linux:9::crb
References

Mon, 12 Oct 2026 03:45:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:10.2
References

Fri, 25 Sep 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 24 Sep 2026 09:45:00 +0000

Type Values Removed Values Added
First Time appeared Flatpak
Flatpak flatpak
Vendors & Products Flatpak
Flatpak flatpak

Wed, 23 Sep 2026 15:15:00 +0000

Type Values Removed Values Added
Description A malicious or compromised Flatpak repository can write attacker-controlled content to arbitrary locations on the host filesystem via extract_extra_data(). On system installs, the write happens as root. Two issues combine: `files/extra` is resolved via path operations that follow symlinks, and blob names from `xa.extra-data-sources` are not sanitized against `..` traversal.
Title Flatpak: flatpak: arbitrary write access as root via extra-data extraction
First Time appeared Redhat
Redhat enterprise Linux
Weaknesses CWE-22
CPEs cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-11-05T18:59:51.175Z

Reserved: 2026-09-22T20:42:17.038Z

Link: CVE-2026-96275

cve-icon Vulnrichment

Updated: 2026-09-25T18:09:15.689Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-23T15:17:32.180

Modified: 2026-11-05T19:17:29.070

Link: CVE-2026-96275

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-24T09:10:46Z

Weaknesses