UBUNTU-CVE-2026-96807
In Flatpak before 1.18.1, a malicious sandboxed app can replace ~/.var/app/$appid/.ld.so with a symlink, causing regenerate_ld_cache to write files at an arbitrary location. The filenames and content are not attacker controlled, making this hard to exploit.
UBUNTU-CVE-2026-96807
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: osv:UBUNTU-CVE-2026-96807
flatpak
Source reference: /affected/0/package/name
- Affected versions
- 0.8.7-5
Source reference:
/affected/0/versions0.10.0-1Source reference:
/affected/0/versions0.10.0-2Source reference:
/affected/0/versions0.10.1-1Source reference:
/affected/0/versions0.10.2-1Source reference:
/affected/0/versions0.10.2.1-1Source reference:
/affected/0/versions0.10.2.1-2Source reference:
/affected/0/versions0.10.3-1Source reference:
/affected/0/versions0.11.1-0ubuntu1Source reference:
/affected/0/versions0.11.3-2Source reference:
/affected/0/versions0.11.3-3Source reference:
/affected/0/versions0.11.7-0ubuntu0.1Source reference:
/affected/0/versions1.0.1-0ubuntu0.1Source reference:
/affected/0/versions1.0.6-0ubuntu0.1Source reference:
/affected/0/versions1.0.7-0ubuntu0.18.04.1Source reference:
/affected/0/versions1.0.8-0ubuntu0.18.04.1Source reference:
/affected/0/versions1.0.9-0ubuntu0.1Source reference:
/affected/0/versions1.0.9-0ubuntu0.2Source reference:
/affected/0/versions1.0.9-0ubuntu0.3Source reference:
/affected/0/versions1.0.9-0ubuntu0.4Source reference:
/affected/0/versions1.0.9-0ubuntu0.4+esm1Source reference:
/affected/0/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
flatpak
Source reference: /affected/1/package/name
- Affected versions
- 1.4.3-1
Source reference:
/affected/1/versions1.6.0-1Source reference:
/affected/1/versions1.6.1-1Source reference:
/affected/1/versions1.6.2-1Source reference:
/affected/1/versions1.6.3-1Source reference:
/affected/1/versions1.6.5-0ubuntu0.1Source reference:
/affected/1/versions1.6.5-0ubuntu0.2Source reference:
/affected/1/versions1.6.5-0ubuntu0.3Source reference:
/affected/1/versions1.6.5-0ubuntu0.4Source reference:
/affected/1/versions1.6.5-0ubuntu0.5Source reference:
/affected/1/versions1.6.5-0ubuntu0.5+esm1Source reference:
/affected/1/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
flatpak
Source reference: /affected/2/package/name
- Affected versions
- 1.10.2-3
Source reference:
/affected/2/versions1.12.2-1Source reference:
/affected/2/versions1.12.2-2Source reference:
/affected/2/versions1.12.3-1Source reference:
/affected/2/versions1.12.4-1Source reference:
/affected/2/versions1.12.5-1Source reference:
/affected/2/versions1.12.6-1Source reference:
/affected/2/versions1.12.7-1Source reference:
/affected/2/versions1.12.7-1ubuntu0.1Source reference:
/affected/2/versions1.12.7-1ubuntu0.1+esm1Source reference:
/affected/2/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
flatpak
Source reference: /affected/3/package/name
- Affected versions
- 1.14.4-2
Source reference:
/affected/3/versions1.14.5-1Source reference:
/affected/3/versions1.14.5-1build1Source reference:
/affected/3/versions1.14.5-1build4Source reference:
/affected/3/versions1.14.5-1build5Source reference:
/affected/3/versions1.14.5-1build6Source reference:
/affected/3/versions1.14.6-1Source reference:
/affected/3/versions1.14.6-1ubuntu0.1Source reference:
/affected/3/versions1.14.6-1ubuntu0.1+esm1Source reference:
/affected/3/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
flatpak
Source reference: /affected/4/package/name
- Affected versions
- 1.16.1-2ubuntu1
Source reference:
/affected/4/versions1.16.1-3ubuntu1Source reference:
/affected/4/versions1.16.2-1Source reference:
/affected/4/versions1.16.3-1Source reference:
/affected/4/versions1.16.3-1build1Source reference:
/affected/4/versions1.16.4-1Source reference:
/affected/4/versions1.16.4-2Source reference:
/affected/4/versions1.16.6-1Source reference:
/affected/4/versions - Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "flatpak",
"purl": "pkg:deb/ubuntu/flatpak?arch=source&distro=esm-apps%2Fbionic",
"ecosystem": "Ubuntu:Pro:18.04:LTS"
},
"versions": [
"0.8.7-5",
"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",
"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"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-96807.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "flatpak",
"binary_version": "1.0.9-0ubuntu0.4+esm1"
},
{
"binary_name": "flatpak-tests",
"binary_version": "1.0.9-0ubuntu0.4+esm1"
},
{
"binary_name": "gir1.2-flatpak-1.0",
"binary_version": "1.0.9-0ubuntu0.4+esm1"
},
{
"binary_name": "libflatpak0",
"binary_version": "1.0.9-0ubuntu0.4+esm1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "flatpak",
"purl": "pkg:deb/ubuntu/flatpak?arch=source&distro=esm-apps%2Ffocal",
"ecosystem": "Ubuntu:Pro:20.04:LTS"
},
"versions": [
"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"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-96807.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "flatpak",
"binary_version": "1.6.5-0ubuntu0.5+esm1"
},
{
"binary_name": "flatpak-tests",
"binary_version": "1.6.5-0ubuntu0.5+esm1"
},
{
"binary_name": "gir1.2-flatpak-1.0",
"binary_version": "1.6.5-0ubuntu0.5+esm1"
},
{
"binary_name": "libflatpak0",
"binary_version": "1.6.5-0ubuntu0.5+esm1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "flatpak",
"purl": "pkg:deb/ubuntu/flatpak?arch=source&distro=esm-apps%2Fjammy",
"ecosystem": "Ubuntu:Pro:22.04:LTS"
},
"versions": [
"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"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-96807.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "flatpak",
"binary_version": "1.12.7-1ubuntu0.1+esm1"
},
{
"binary_name": "flatpak-tests",
"binary_version": "1.12.7-1ubuntu0.1+esm1"
},
{
"binary_name": "gir1.2-flatpak-1.0",
"binary_version": "1.12.7-1ubuntu0.1+esm1"
},
{
"binary_name": "libflatpak0",
"binary_version": "1.12.7-1ubuntu0.1+esm1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "flatpak",
"purl": "pkg:deb/ubuntu/flatpak?arch=source&distro=esm-apps%2Fnoble",
"ecosystem": "Ubuntu:Pro:24.04:LTS"
},
"versions": [
"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"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-96807.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "flatpak",
"binary_version": "1.14.6-1ubuntu0.1+esm1"
},
{
"binary_name": "flatpak-tests",
"binary_version": "1.14.6-1ubuntu0.1+esm1"
},
{
"binary_name": "gir1.2-flatpak-1.0",
"binary_version": "1.14.6-1ubuntu0.1+esm1"
},
{
"binary_name": "libflatpak0",
"binary_version": "1.14.6-1ubuntu0.1+esm1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"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",
"1.16.3-1build1",
"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/2026/UBUNTU-CVE-2026-96807.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"
}
]
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #50909 · Revision 1
- Added to Heist Feed
- Publisher date