https://cve.radiocsirt.org/rss/recent/all/10 Most recent entries from all 2026-10-04T12:14:36.294041+00:00 Vulnerability-Lookup csirt@opendfir.org python-feedgen Contains only the most 10 recent entries. https://cve.radiocsirt.org/vuln/cleanstart-2024-po02295 CLEANSTART-2024-PO02295 — Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux 2026-10-04T12:14:36.504878+00:00

Affected: CleanStart: flatpak

Security vulnerability affects the flatpak package. Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux.

 https://cve.radiocsirt.org/vuln/cnvd-2021-03542 cnvd-2021-03542 2026-10-04T12:14:36.504937+00:00 cnvd-2021-03542 https://cve.radiocsirt.org/vuln/euvd-2026-22068 EUVD-2026-22068 2026-10-04T12:14:36.504955+00:00 EUVD-2026-22068 https://cve.radiocsirt.org/vuln/fkie_cve-2021-21261 fkie_cve-2021-21261 2026-10-04T12:14:36.504967+00:00

Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. A bug was discovered in the `flatpak-portal` service that can allow sandboxed applications to execute arbitrary code on the host system (a sandbox escape). This sandbox-escape bug is present in versions from 0.11.4 and before fixed versions 1.8.5 and 1.10.0. The Flatpak portal D-Bus service (`flatpak-portal`, also known by its D-Bus service name `org.freedesktop.portal.Flatpak`) allows apps in a Flatpak sandbox to launch their own subprocesses in a new sandbox instance, either with the same security settings as the caller or with more restrictive security settings. For example, this is used in Flatpak-packaged web browsers such as Chromium to launch subprocesses that will process untrusted web content, and give those subprocesses a more restrictive sandbox than the browser itself. In vulnerable versions, the Flatpak portal service passes caller-specified environment variables to non-sandboxed processes on the host system, and in particular to the `flatpak run` command that is used to launch the new sandbox instance. A malicious or compromised Flatpak app could set environment variables that are trusted by the `flatpak run` command, and use them to execute arbitrary code that is not in a sandbox. As a workaround, this vulnerability can be mitigated by preventing the `flatpak-portal` service from starting, but that mitigation will prevent many Flatpak apps from working correctl…

 https://cve.radiocsirt.org/vuln/gsd-2021-21261 gsd-2021-21261 2026-10-04T12:14:36.505001+00:00 gsd-2021-21261 https://cve.radiocsirt.org/vuln/oesa-2021-1043 OESA-2021-1043 — flatpak security update 2026-10-04T12:14:36.505013+00:00

Affected: openEuler:20.03-LTS: flatpak, openEuler:20.03-LTS-SP1: flatpak

flatpak is a system for building, distributing and running sandboxed desktop applications on Linux. See https://wiki.gnome.org/Projects/SandboxedApps for more information. Security Fix(es): Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. A bug was discovered in the `flatpak-portal` service that can allow sandboxed applications to execute arbitrary code on the host system (a sandbox escape). This sandbox-escape bug is present in versions from 0.11.4 and before fixed versions 1.8.5 and 1.9.4. The Flatpak portal D-Bus service (`flatpak-portal`, also known by its D-Bus service name `org.freedesktop.portal.Flatpak`) allows apps in a Flatpak sandbox to launch their own subprocesses in a new sandbox instance, either with the same security settings as the caller or with more restrictive security settings. For example, this is used in Flatpak-packaged web browsers such as Chromium to launch subprocesses that will process untrusted web content, and give those subprocesses a more restrictive sandbox than the browser itself. In vulnerable versions, the Flatpak portal service passes caller-specified environment variables to non-sandboxed processes on the host system, and in particular to the `flatpak run` command that is used to launch the new sandbox instance. A malicious or compromised Flatpak app could set environment variables that are trusted by the `flatpak run` command, and use them to execute arbitrary code that is not in…

 https://cve.radiocsirt.org/vuln/opensuse-su-2021:0520-1 openSUSE-SU-2021:0520-1 — Security update for flatpak, libostree, xdg-desktop-portal, xdg-desktop-portal-gtk 2026-10-04T12:14:36.505047+00:00

Security update for flatpak, libostree, xdg-desktop-portal, xdg-desktop-portal-gtk

 https://cve.radiocsirt.org/vuln/rhsa-2021:0306 RHSA-2021:0306 — Red Hat Security Advisory: flatpak security update 2026-10-04T12:14:36.505065+00:00

flatpak: sandbox escape via spawn portal

 https://cve.radiocsirt.org/vuln/suse-su-2021:1094-1 SUSE-SU-2021:1094-1 — Security update for flatpak, libostree, xdg-desktop-portal, xdg-desktop-portal-gtk 2026-10-04T12:14:36.505081+00:00

Security update for flatpak, libostree, xdg-desktop-portal, xdg-desktop-portal-gtk

 https://cve.radiocsirt.org/vuln/ubuntu-cve-2021-21261 UBUNTU-CVE-2021-21261 2026-10-04T12:14:36.505096+00:00

Affected: Ubuntu:18.04:LTS: flatpak, Ubuntu:20.04:LTS: flatpak

Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. A bug was discovered in the `flatpak-portal` service that can allow sandboxed applications to execute arbitrary code on the host system (a sandbox escape). This sandbox-escape bug is present in versions from 0.11.4 and before fixed versions 1.8.5 and 1.10.0. The Flatpak portal D-Bus service (`flatpak-portal`, also known by its D-Bus service name `org.freedesktop.portal.Flatpak`) allows apps in a Flatpak sandbox to launch their own subprocesses in a new sandbox instance, either with the same security settings as the caller or with more restrictive security settings. For example, this is used in Flatpak-packaged web browsers such as Chromium to launch subprocesses that will process untrusted web content, and give those subprocesses a more restrictive sandbox than the browser itself. In vulnerable versions, the Flatpak portal service passes caller-specified environment variables to non-sandboxed processes on the host system, and in particular to the `flatpak run` command that is used to launch the new sandbox instance. A malicious or compromised Flatpak app could set environment variables that are trusted by the `flatpak run` command, and use them to execute arbitrary code that is not in a sandbox. As a workaround, this vulnerability can be mitigated by preventing the `flatpak-portal` service from starting, but that mitigation will prevent many Flatpak apps from working correctl…