{"id":"CVE-2021-41133","aliases":["ALEA-2021:4539","ALPINE-CVE-2021-41133","ALSA-2021:4042","DEBIAN-CVE-2021-41133","DSA-4984-1","EUVD-2021-28254","GHSA-67h7-w3jq-vh4q","MGASA-2021-0486","OESA-2021-1404","RHSA-2021:4042","RHSA-2021:4044","RHSA-2021:4106","RHSA-2021:4107","RLSA-2021:4042","SUSE-SU-2021:3472-1","SUSE-SU-2022:3284-1","SUSE-SU-2022:3439-1","UBUNTU-CVE-2021-41133","USN-5191-1","openSUSE-SU-2021:1400-1","openSUSE-SU-2021:3472-1","openSUSE-SU-2024:11574-1"],"status":"published","title":"Sandbox bypass via recent VFS-manipulating syscalls","description":"Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. In versions prior to 1.10.4 and 1.12.0, Flatpak apps with direct access to AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can trick portals and other host-OS services into treating the Flatpak app as though it was an ordinary, non-sandboxed host-OS process. They can do this by manipulating the VFS using recent mount-related syscalls that are not blocked by Flatpak's denylist seccomp filter, in order to substitute a crafted `/.flatpak-info` or make that file disappear entirely. Flatpak apps that act as clients for AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can escalate the privileges that the corresponding services will believe the Flatpak app has. Note that protocols that operate entirely over the D-Bus session bus (user bus), system bus or accessibility bus are not affected by this. This is due to the use of a proxy process `xdg-dbus-proxy`, whose VFS cannot be manipulated by the Flatpak app, when interacting with these buses. Patches exist for versions 1.10.4 and 1.12.0, and as of time of publication, a patch for version 1.8.2 is being planned. There are no workarounds aside from upgrading to a patched version.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00436,"percentile":0.38233,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-20"],"published":"2021-10-08T00:00:00Z","modified":"2026-11-03T06:31:46Z","fixes":[{"ecosystem":"AlmaLinux:8","package":"flatpak","fixed_in":["1.8.5-5.el8_5","1.8.5-4.el8_4"],"sources":["osv"]},{"ecosystem":"AlmaLinux:8","package":"flatpak-devel","fixed_in":["1.8.5-5.el8_5"],"sources":["osv"]},{"ecosystem":"AlmaLinux:8","package":"flatpak-libs","fixed_in":["1.8.5-5.el8_5","1.8.5-4.el8_4"],"sources":["osv"]},{"ecosystem":"AlmaLinux:8","package":"flatpak-selinux","fixed_in":["1.8.5-5.el8_5","1.8.5-4.el8_4"],"sources":["osv"]},{"ecosystem":"AlmaLinux:8","package":"flatpak-session-helper","fixed_in":["1.8.5-5.el8_5","1.8.5-4.el8_4"],"sources":["osv"]},{"ecosystem":"Alpine:v3.14","package":"flatpak","fixed_in":["1.10.5-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.15","package":"flatpak","fixed_in":["1.12.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.16","package":"flatpak","fixed_in":["1.12.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.17","package":"flatpak","fixed_in":["1.12.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.18","package":"flatpak","fixed_in":["1.12.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.19","package":"flatpak","fixed_in":["1.12.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.20","package":"flatpak","fixed_in":["1.12.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.21","package":"flatpak","fixed_in":["1.12.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.22","package":"flatpak","fixed_in":["1.12.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.23","package":"flatpak","fixed_in":["1.12.2-r0"],"sources":["osv"]},{"ecosystem":"Alpine:v3.24","package":"flatpak","fixed_in":["1.12.2-r0"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"flatpak","fixed_in":["1.12.1-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"flatpak","fixed_in":["1.12.1-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"flatpak","fixed_in":["1.12.1-1"],"sources":["osv"]},{"ecosystem":"Debian:11","package":"flatpak","fixed_in":["1.10.5-0+deb11u1"],"sources":["osv"]},{"ecosystem":"Mageia:8","package":"flatpak","fixed_in":["1.10.5-1.mga8"],"sources":["osv"]},{"ecosystem":"openEuler:20.03-LTS-SP1","package":"flatpak","fixed_in":["1.0.3-7.oe1"],"sources":["osv"]},{"ecosystem":"openEuler:20.03-LTS-SP2","package":"flatpak","fixed_in":["1.0.3-7.oe1"],"sources":["osv"]},{"ecosystem":"Red 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Advisory","advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T5DKCYRC6MFSTFCUP4DELCOUUP3SFEFX/","tags":["vendor-advisory","x_transferred","web"]},{"url":"https://security.gentoo.org/glsa/202312-12","tags":["vendor-advisory","x_transferred","advisory"]},{"url":"https://security.alpinelinux.org/vuln/CVE-2021-41133","tags":["advisory"]},{"url":"https://vulners.com/cve/CVE-2021-41133","tags":["report"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-41133","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2021-0486.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=29543","tags":["report"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/thread/R5656ONDP2MGKIJMKEC7N2NXCV27WGTC/","tags":["web"]},{"url":"https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1404","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-41133","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2021:4042","tags":["advisory"]},{"url":"https://access.redhat.com/security/updates/classification/#important","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2012245","tags":["report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2021/rhsa-2021_4042.json","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2021-41133","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-41133","tags":["advisory","report"]},{"url":"https://access.redhat.com/errata/RHSA-2021:4044","tags":["advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2021/rhsa-2021_4044.json","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2021:4106","tags":["advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2021/rhsa-2021_4106.json","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2021:4107","tags":["advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2021/rhsa-2021_4107.json","tags":["advisory"]},{"url":"https://errata.rockylinux.org/RLSA-2021:4042","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2021/suse-su-20213472-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1191507","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2021-41133","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2022/suse-su-20223284-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1194610","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2021-21261","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2021-43860","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2022/suse-su-20223439-1/","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2021-41133","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-5191-1","tags":["advisory"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/O63MYUSWLBDBHWT5CBFN7YN5WUMCT6NS/","tags":["advisory"]},{"url":"https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/thread/QXL4FA3WICXGFNYWHOG3GKOXZERBN6TL/","tags":["advisory"]},{"url":"","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2021-41133","title":"Sandbox bypass via recent VFS-manipulating syscalls","description":"Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. In versions prior to 1.10.4 and 1.12.0, Flatpak apps with direct access to AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can trick portals and other host-OS services into treating the Flatpak app as though it was an ordinary, non-sandboxed host-OS process. They can do this by manipulating the VFS using recent mount-related syscalls that are not blocked by Flatpak's denylist seccomp filter, in order to substitute a crafted `/.flatpak-info` or make that file disappear entirely. Flatpak apps that act as clients for AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can escalate the privileges that the corresponding services will believe the Flatpak app has. Note that protocols that operate entirely over the D-Bus session bus (user bus), system bus or accessibility bus are not affected by this. This is due to the use of a proxy process `xdg-dbus-proxy`, whose VFS cannot be manipulated by the Flatpak app, when interacting with these buses. Patches exist for versions 1.10.4 and 1.12.0, and as of time of publication, a patch for version 1.8.2 is being planned. There are no workarounds aside from upgrading to a patched version.","status":"published","published":"2021-10-08T00:00:00Z","modified":"2024-08-04T02:59:31.388Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:32:58.739039Z"}],"euvd":[{"id":"EUVD-2021-28254","description":"Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. In versions prior to 1.10.4 and 1.12.0, Flatpak apps with direct access to AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can trick portals and other host-OS services into treating the Flatpak app as though it was an ordinary, non-sandboxed host-OS process. They can do this by manipulating the VFS using recent mount-related syscalls that are not blocked by Flatpak's denylist seccomp filter, in order to substitute a crafted `/.flatpak-info` or make that file disappear entirely. Flatpak apps that act as clients for AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can escalate the privileges that the corresponding services will believe the Flatpak app has. Note that protocols that operate entirely over the D-Bus session bus (user bus), system bus or accessibility bus are not affected by this. This is due to the use of a proxy process `xdg-dbus-proxy`, whose VFS cannot be manipulated by the Flatpak app, when interacting with these buses. Patches exist for versions 1.10.4 and 1.12.0, and as of time of publication, a patch for version 1.8.2 is being planned. There are no workarounds aside from upgrading to a patched version.","status":"published","published":"2021-10-08T00:00:00Z","modified":"2024-08-04T02:59:31Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T03:24:18.784846Z"}],"nvd":[{"id":"CVE-2021-41133","description":"Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. In versions prior to 1.10.4 and 1.12.0, Flatpak apps with direct access to AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can trick portals and other host-OS services into treating the Flatpak app as though it was an ordinary, non-sandboxed host-OS process. They can do this by manipulating the VFS using recent mount-related syscalls that are not blocked by Flatpak's denylist seccomp filter, in order to substitute a crafted `/.flatpak-info` or make that file disappear entirely. Flatpak apps that act as clients for AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can escalate the privileges that the corresponding services will believe the Flatpak app has. Note that protocols that operate entirely over the D-Bus session bus (user bus), system bus or accessibility bus are not affected by this. This is due to the use of a proxy process `xdg-dbus-proxy`, whose VFS cannot be manipulated by the Flatpak app, when interacting with these buses. Patches exist for versions 1.10.4 and 1.12.0, and as of time of publication, a patch for version 1.8.2 is being planned. There are no workarounds aside from upgrading to a patched version.","status":"published","published":"2021-10-08T14:15:08.723Z","modified":"2026-06-17T04:07:56.37Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":4.6,"vector":"AV:L/AC:L/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:06:59.689345Z"}],"osv":[{"id":"ALPINE-CVE-2021-41133","description":"Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. In versions prior to 1.10.4 and 1.12.0, Flatpak apps with direct access to AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can trick portals and other host-OS services into treating the Flatpak app as though it was an ordinary, non-sandboxed host-OS process. They can do this by manipulating the VFS using recent mount-related syscalls that are not blocked by Flatpak's denylist seccomp filter, in order to substitute a crafted `/.flatpak-info` or make that file disappear entirely. Flatpak apps that act as clients for AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can escalate the privileges that the corresponding services will believe the Flatpak app has. Note that protocols that operate entirely over the D-Bus session bus (user bus), system bus or accessibility bus are not affected by this. This is due to the use of a proxy process `xdg-dbus-proxy`, whose VFS cannot be manipulated by the Flatpak app, when interacting with these buses. Patches exist for versions 1.10.4 and 1.12.0, and as of time of publication, a patch for version 1.8.2 is being planned. There are no workarounds aside from upgrading to a patched version.","status":"published","published":"2021-10-08T14:15:08.723Z","modified":"2026-11-03T06:31:46.667580703Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-03T07:18:15.355745Z"},{"id":"CVE-2021-41133","description":"Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. In versions prior to 1.10.4 and 1.12.0, Flatpak apps with direct access to AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can trick portals and other host-OS services into treating the Flatpak app as though it was an ordinary, non-sandboxed host-OS process. They can do this by manipulating the VFS using recent mount-related syscalls that are not blocked by Flatpak's denylist seccomp filter, in order to substitute a crafted `/.flatpak-info` or make that file disappear entirely. Flatpak apps that act as clients for AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can escalate the privileges that the corresponding services will believe the Flatpak app has. Note that protocols that operate entirely over the D-Bus session bus (user bus), system bus or accessibility bus are not affected by this. This is due to the use of a proxy process `xdg-dbus-proxy`, whose VFS cannot be manipulated by the Flatpak app, when interacting with these buses. Patches exist for versions 1.10.4 and 1.12.0, and as of time of publication, a patch for version 1.8.2 is being planned. There are no workarounds aside from upgrading to a patched version.","status":"published","published":"2021-10-08T14:15:08.723Z","modified":"2026-10-20T14:29:25.993266292Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:21.249056Z"},{"id":"DEBIAN-CVE-2021-41133","description":"Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. In versions prior to 1.10.4 and 1.12.0, Flatpak apps with direct access to AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can trick portals and other host-OS services into treating the Flatpak app as though it was an ordinary, non-sandboxed host-OS process. They can do this by manipulating the VFS using recent mount-related syscalls that are not blocked by Flatpak's denylist seccomp filter, in order to substitute a crafted `/.flatpak-info` or make that file disappear entirely. Flatpak apps that act as clients for AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can escalate the privileges that the corresponding services will believe the Flatpak app has. Note that protocols that operate entirely over the D-Bus session bus (user bus), system bus or accessibility bus are not affected by this. This is due to the use of a proxy process `xdg-dbus-proxy`, whose VFS cannot be manipulated by the Flatpak app, when interacting with these buses. Patches exist for versions 1.10.4 and 1.12.0, and as of time of publication, a patch for version 1.8.2 is being planned. There are no workarounds aside from upgrading to a patched version.","status":"published","published":"2021-10-08T14:15:08.723Z","modified":"2026-10-23T18:03:38.60976017Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:35.521549Z"},{"id":"OESA-2021-1404","title":"flatpak security update","description":"flatpak is a system for building, distributing and running sandboxed desktop applications on Linux.\r\n\r\nSecurity Fix(es):\r\n\r\nIn versions prior to 1.10.4 and 1.12.0, Flatpak apps with direct access to AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can trick portals and other host-OS services into treating the Flatpak app as though it was an ordinary, non-sandboxed host-OS process. They can do this by manipulating the VFS using recent mount-related syscalls that are not blocked by Flatpak\u0026apos;s denylist seccomp filter, in order to substitute a crafted `/.flatpak-info` or make that file disappear entirely. Flatpak apps that act as clients for AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can escalate the privileges that the corresponding services will believe the Flatpak app has. Note that protocols that operate entirely over the D-Bus session bus (user bus), system bus or accessibility bus are not affected by this. This is due to the use of a proxy process `xdg-dbus-proxy`, whose VFS cannot be manipulated by the Flatpak app, when interacting with these buses. Patches exist for versions 1.10.4 and 1.12.0, and as of time of publication, a patch for version 1.8.2 is being planned. There are no workarounds aside from upgrading to a patched version.(CVE-2021-41133)","status":"published","published":"2021-10-30T11:04:40Z","modified":"2026-08-18T01:16:05.887018541Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:52:38.987987Z"},{"id":"RHSA-2021:4042","title":"Red Hat Security Advisory: flatpak security update","status":"published","published":"2024-09-16T06:43:31Z","modified":"2025-11-22T12:25:53Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:08.619234Z"},{"id":"RHSA-2021:4044","title":"Red Hat Security Advisory: flatpak security update","status":"published","published":"2024-09-16T06:43:39Z","modified":"2026-06-26T12:22:17.714226198Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:08.619234Z"},{"id":"RHSA-2021:4106","title":"Red Hat Security Advisory: flatpak security update","status":"published","published":"2024-09-16T06:43:45Z","modified":"2025-11-22T12:26:01Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:08.619234Z"},{"id":"RHSA-2021:4107","title":"Red Hat Security Advisory: flatpak security update","status":"published","published":"2024-09-16T06:43:53Z","modified":"2025-11-22T12:26:01Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:08.619234Z"},{"id":"RLSA-2021:4042","title":"Important: flatpak security update","description":"Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux.\n\nSecurity Fix(es):\n\n* flatpak: Sandbox bypass via recent VFS-manipulating syscalls (CVE-2021-41133)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2021-11-01T13:11:58Z","modified":"2026-02-04T07:40:27.087248Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:23.969672Z"},{"id":"UBUNTU-CVE-2021-41133","description":"Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. In versions prior to 1.10.4 and 1.12.0, Flatpak apps with direct access to AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can trick portals and other host-OS services into treating the Flatpak app as though it was an ordinary, non-sandboxed host-OS process. They can do this by manipulating the VFS using recent mount-related syscalls that are not blocked by Flatpak's denylist seccomp filter, in order to substitute a crafted `/.flatpak-info` or make that file disappear entirely. Flatpak apps that act as clients for AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can escalate the privileges that the corresponding services will believe the Flatpak app has. Note that protocols that operate entirely over the D-Bus session bus (user bus), system bus or accessibility bus are not affected by this. This is due to the use of a proxy process `xdg-dbus-proxy`, whose VFS cannot be manipulated by the Flatpak app, when interacting with these buses. Patches exist for versions 1.10.4 and 1.12.0, and as of time of publication, a patch for version 1.8.2 is being planned. There are no workarounds aside from upgrading to a patched version.","status":"published","published":"2021-10-08T14:15:00Z","modified":"2026-04-22T13:01:18.900008Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:29.220315Z"},{"id":"ALEA-2021:4539","title":"flatpak bug fix and enhancement update","description":"Flatpak is a system for building, distributing, and running sandboxed\ndesktop applications on Linux.\n\nBug Fix(es) and Enhancement(s):\n\n* CVE-2021-41133 flatpak: sandbox bypass via recent VFS-manipulating\nsyscalls (BZ#2012868)","status":"published","published":"2021-11-09T19:26:12Z","modified":"2026-10-29T11:01:00.450473478Z","updated_at":"2026-11-02T15:27:46.318571Z"},{"id":"ALSA-2021:4042","title":"Important: flatpak security update","description":"Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux.\n\nSecurity Fix(es):\n\n* flatpak: Sandbox bypass via recent VFS-manipulating syscalls (CVE-2021-41133)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2021-11-01T13:11:58Z","modified":"2026-10-29T11:00:45.539974369Z","updated_at":"2026-11-02T15:27:51.196609Z"},{"id":"DSA-4984-1","title":"flatpak - security update","status":"published","published":"2021-10-12T00:00:00Z","modified":"2026-03-09T02:09:31.530884Z","updated_at":"2026-11-02T15:46:17.19998Z"},{"id":"MGASA-2021-0486","title":"Updated flatpak packages fix security vulnerability","description":"Flatpak apps with direct access to AF_UNIX sockets such as those used by\nWayland, Pipewire or pipewire-pulse can trick portals and other host-OS\nservices into treating the Flatpak app as though it was an ordinary,\nnon-sandboxed host-OS process, by manipulating the VFS using recent\nmount-related syscalls that are not blocked by Flatpak's denylist seccomp\nfilter, in order to substitute a crafted /.flatpak-info or make that file\ndisappear entirely.\n","status":"published","published":"2021-10-23T10:05:28Z","modified":"2026-04-16T04:41:55.516120715Z","updated_at":"2026-11-02T15:49:41.849028Z"},{"id":"openSUSE-SU-2021:1400-1","title":"Security update for flatpak","description":"This update for flatpak fixes the following issues:\n\n- Update to version 1.10.5:\n- CVE-2021-41133: Fixed a bug that could lead to sandbox bypass via recent VFS-manipulating syscalls. (bsc#1191507)\n\nThis update was imported from the SUSE:SLE-15-SP2:Update update project.","status":"published","published":"2021-10-31T14:52:37Z","modified":"2026-02-04T02:51:28.983239Z","updated_at":"2026-11-02T16:58:32.266854Z"},{"id":"openSUSE-SU-2021:3472-1","title":"Security update for flatpak","description":"This update for flatpak fixes the following issues:\n\n- Update to version 1.10.5:\n- CVE-2021-41133: Fixed a bug that could lead to sandbox bypass via recent VFS-manipulating syscalls. (bsc#1191507)\n","status":"published","published":"2021-10-20T06:40:50Z","modified":"2026-02-04T03:24:03.274634Z","updated_at":"2026-11-02T16:58:32.266854Z"},{"id":"openSUSE-SU-2024:11574-1","title":"flatpak-1.12.1-1.1 on GA media","description":"These are all security issues fixed in the flatpak-1.12.1-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T04:32:01.113826Z","updated_at":"2026-11-02T16:58:35.195147Z"},{"id":"SUSE-SU-2021:3472-1","title":"Security update for flatpak","description":"This update for flatpak fixes the following issues:\n\n- Update to version 1.10.5:\n- CVE-2021-41133: Fixed a bug that could lead to sandbox bypass via recent VFS-manipulating syscalls. (bsc#1191507)\n","status":"published","published":"2021-10-20T06:40:49Z","modified":"2025-05-02T04:10:52.751507Z","updated_at":"2026-11-02T15:53:49.605187Z"},{"id":"SUSE-SU-2022:3284-1","title":"Security update for flatpak","description":"This update for flatpak fixes the following issues:\n\n- CVE-2021-41133: Fixed sandbox bypass via recent syscalls (bsc#1191507).\n- CVE-2021-43860: Fixed metadata validation (bsc#1194610).\n","status":"published","published":"2022-09-15T14:23:18Z","modified":"2026-02-04T02:45:22.977547Z","updated_at":"2026-11-02T15:53:51.440565Z"},{"id":"SUSE-SU-2022:3439-1","title":"Security update for flatpak","description":"This update for flatpak fixes the following issues:\n\n- CVE-2021-41133: Fixed sandbox bypass via recent syscalls (bsc#1191507).\n","status":"published","published":"2022-09-27T13:05:17Z","modified":"2026-02-04T03:59:44.398453Z","updated_at":"2026-11-02T15:53:51.440565Z"},{"id":"USN-5191-1","title":"flatpak vulnerability","description":"It was discovered that Flatpak incorrectly handled certain AF_UNIX sockets.\nAn attacker could use this to specially craft a Flatpak application that\ncould escape sandbox confinement.\n","status":"published","published":"2021-12-14T11:33:13Z","modified":"2026-04-22T10:18:53.176333Z","updated_at":"2026-11-02T16:58:15.683829Z"}]}}