Flatpak passes through arbitrary vendor-extension keys unmodified when exporting an application's Desktop Entry (.desktop) and D-Bus Service (.service) files, instead of validating against an allowlist. A malicious Flatpak app can use this to cause denial of service (e.g. forced application restart loops) or to influence host D-Bus/systemd activation behavior beyond what the sandbox is intended to permit.
Metrics
Affected Vendors & Products
Advisories
| Source | ID | Title |
|---|---|---|
Debian DSA |
DSA-6524-1 | flatpak security update |
Fixes
Solution
No solution given by the vendor.
Workaround
Only install applications from trusted sources.
References
History
Mon, 28 Sep 2026 21:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | Flatpak passes through arbitrary vendor-extension keys unmodified when exporting an application's Desktop Entry (.desktop) and D-Bus Service (.service) files, instead of validating against an allowlist. A malicious Flatpak app can use this to cause denial of service (e.g. forced application restart loops) or to influence host D-Bus/systemd activation behavior beyond what the sandbox is intended to permit. | |
| Title | Flatpak: flatpak: denial of service via unsanitized keys in exported desktop entry / d-bus service files | |
| First Time appeared |
Redhat
Redhat enterprise Linux |
|
| Weaknesses | CWE-20 | |
| 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
|
Projects
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-09-28T20:57:06.758Z
Reserved: 2026-09-23T21:12:57.647Z
Link: CVE-2026-97027
No data.
Status : Received
Published: 2026-09-28T21:17:20.067
Modified: 2026-09-28T21:17:20.067
Link: CVE-2026-97027
No data.
OpenCVE Enrichment
No data.
Weaknesses
Debian DSA