Critical
flatpak — security advisory
Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. Versions prior to 1.10.8, 1.12.8, 1.14.4, and 1.15.4 contain a vulnerability similar to CVE-2017-5226, but using the `TIOCLINUX` ioctl command instead of `TIOCSTI`. If a Flatpak app is run on a Linux virtual console such as `/dev/tty1`, it can copy text from the virtual console and paste it into the command buffer, from which the command might be run after the Flatpak app has exited. Ordinary graphical terminal emulators like xterm, gnome-terminal and Konsole are unaffected. This vulnerability is specific to the Linux virtual consoles `/dev/tty1`, `/dev/tty2` and so on. A patch is available in versions 1.10.8, 1.12.8, 1.14.4, and 1.15.4. As a workaround, don't run Flatpak on a Linux virtual console. Flatpak is primarily designed to be used in a Wayland or X11 graphical environment.
- Products
- flatpak
- Affected versions
- 0.10.0-1, 0.10.0-2, 0.10.1-1, 0.10.2-1, 0.10.2.1-1, 0.10.2.1-2, 0.10.3-1, 0.11.1-0ubuntu1, 0.11.3-2, 0.11.3-3, 0.11.7-0ubuntu0.1, 0.8.7-5, 1.0.1-0ubuntu0.1, 1.0.6-0ubuntu0.1, 1.0.7-0ubuntu0.18.04.1, 1.0.8-0ubuntu0.18.04.1, 1.0.9-0ubuntu0.1, 1.0.9-0ubuntu0.2, 1.0.9-0ubuntu0.3, 1.0.9-0ubuntu0.4, 1.0.9-0ubuntu0.4+esm1, 1.10.2-3, 1.12.2-1, 1.12.2-2, 1.12.3-1, 1.12.4-1, 1.12.5-1, 1.12.6-1, 1.12.7-1, 1.12.7-1ubuntu0.1, 1.12.7-1ubuntu0.1+esm1, 1.14.4-2, 1.14.5-1, 1.14.5-1build1, 1.14.5-1build4, 1.14.5-1build5, 1.14.5-1build6, 1.14.6-1, 1.14.6-1ubuntu0.1, 1.14.6-1ubuntu0.1+esm1, 1.16.0-2, 1.16.1-1build1, 1.16.1-2, 1.16.1-2ubuntu1, 1.16.1-3ubuntu1, 1.16.2-1, 1.16.3-1, 1.16.3-1build1, 1.16.4-1, 1.16.4-2, 1.16.6-1, 1.18.0-1, 1.18.1-1, 1.18.2-1, 1.18.4-1, 1.4.3-1, 1.6.0-1, 1.6.1-1, 1.6.2-1, 1.6.3-1, 1.6.5-0ubuntu0.1, 1.6.5-0ubuntu0.2, 1.6.5-0ubuntu0.3, 1.6.5-0ubuntu0.4, 1.6.5-0ubuntu0.5, 1.6.5-0ubuntu0.5+esm1
- Fixed versions
- Not specified
- CVEs
- CVE-2023-28100
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:39 UTC · Revision 1
Source evidence
Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. Versions prior to 1.10.8, 1.12.8, 1.14.4, and 1.15.4 contain a vulnerability similar to CVE-2017-5226, but using the `TIOCLINUX` ioctl command instead of `TIOCSTI`. If a Flatpak app is run on a Linux virtual console such as `/dev/tty1`, it can copy text from the virtual console and paste it into the command buffer, from which the command might be run after the Flatpak app has exited. Ordinary graphical terminal emulators like xterm, gnome-terminal and Konsole are unaffected. This vulnerability is specific to the Linux virtual consoles `/dev/tty1`, `/dev/tty2` and so on. A patch is available in versions 1.10.8, 1.12.8, 1.14.4, and 1.15.4. As a workaround, don't run Flatpak on a Linux virtual console. Flatpak is primarily designed to be used in a Wayland or X11 graphical environment.
osv:UBUNTU-CVE-2023-28100
flatpak
Fixed versions: Not specified
flatpak
Fixed versions: Not specified
flatpak
Fixed versions: Not specified
flatpak
Fixed versions: Not specified
flatpak
Fixed versions: Not specified
flatpak
Fixed versions: Not specified
flatpak
Fixed versions: Not specified
Complete source record
{
"id": "d18a95f668aa79309aa7d24a60d3eb508217efc06848eca920d47c1a204c2cce",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2023-28100",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2023-28100",
"summary": "Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. Versions prior to 1.10.8, 1.12.8, 1.14.4, and 1.15.4 contain a vulnerability similar to CVE-2017-5226, but using the `TIOCLINUX` ioctl command instead of `TIOCSTI`. If a Flatpak app is run on a Linux virtual console such as `/dev/tty1`, it can copy text from the virtual console and paste it into the command buffer, from which the command might be run after the Flatpak app has exited. Ordinary graphical terminal emulators like xterm, gnome-terminal and Konsole are unaffected. This vulnerability is specific to the Linux virtual consoles `/dev/tty1`, `/dev/tty2` and so on. A patch is available in versions 1.10.8, 1.12.8, 1.14.4, and 1.15.4. As a workaround, don't run Flatpak on a Linux virtual console. Flatpak is primarily designed to be used in a Wayland or X11 graphical environment.",
"evidence": "osv:UBUNTU-CVE-2023-28100",
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{
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{
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{
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{
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"aliases": [
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},
{
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"ecosystem": "Ubuntu:26.10"
},
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"1.18.1-1",
"1.18.2-1",
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],
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},
"ecosystem_specific": {
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{
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},
{
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},
{
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},
{
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]
}
},
{
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],
"package": {
"name": "flatpak",
"purl": "pkg:deb/ubuntu/flatpak?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"1.16.1-2ubuntu1",
"1.16.1-3ubuntu1",
"1.16.2-1",
"1.16.3-1",
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"1.16.4-1",
"1.16.4-2",
"1.16.6-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-28100.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "flatpak",
"binary_version": "1.16.6-1"
},
{
"binary_name": "flatpak-tests",
"binary_version": "1.16.6-1"
},
{
"binary_name": "gir1.2-flatpak-1.0",
"binary_version": "1.16.6-1"
},
{
"binary_name": "libflatpak0",
"binary_version": "1.16.6-1"
}
]
}
}
],
"modified": "2026-10-17T12:57:16.314323379Z",
"provider": "osv",
"upstream": [
"CVE-2023-28100"
],
"references": [
"https://ubuntu.com/security/CVE-2023-28100",
"https://github.com/flatpak/flatpak/security/advisories/GHSA-7qpw-3vjv-xrqp",
"https://github.com/flatpak/flatpak/commit/8e63de9a7d3124f91140fc74f8ca9ed73ed53be9",
"https://marc.info/?l=oss-security&m=167879021709955&w=2",
"https://www.cve.org/CVERecord?id=CVE-2023-28100"
]
},
"related_cves": [
{
"value": "CVE-2023-28100",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 357073,
"published_at": "2023-03-16T16:15:00+00:00"
}