UBUNTU-CVE-2026-34079

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Source
https://ubuntu.com/security/CVE-2026-34079
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34079.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-34079
Upstream
  • CVE-2026-34079
Published
2026-04-07T22:16:00Z
Modified
2026-05-20T16:25:31.910710484Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Flatpak is a Linux application sandboxing and distribution framework. Prior to 1.16.4, the caching for ld.so removes outdated cache files without properly checking that the app controlled path to the outdated cache is in the cache directory. This allows Flatpak apps to delete arbitrary files on the host. This vulnerability is fixed in 1.16.4.

References

Affected packages

Ubuntu:18.04:LTS
flatpak

Package

Name
flatpak
Purl
pkg:deb/ubuntu/flatpak?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

0.*
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.*
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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "flatpak",
            "binary_version": "1.0.9-0ubuntu0.4"
        },
        {
            "binary_name": "flatpak-tests",
            "binary_version": "1.0.9-0ubuntu0.4"
        },
        {
            "binary_name": "gir1.2-flatpak-1.0",
            "binary_version": "1.0.9-0ubuntu0.4"
        },
        {
            "binary_name": "libflatpak0",
            "binary_version": "1.0.9-0ubuntu0.4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34079.json"
Ubuntu:20.04:LTS
flatpak

Package

Name
flatpak
Purl
pkg:deb/ubuntu/flatpak?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "flatpak",
            "binary_version": "1.6.5-0ubuntu0.5"
        },
        {
            "binary_name": "flatpak-tests",
            "binary_version": "1.6.5-0ubuntu0.5"
        },
        {
            "binary_name": "gir1.2-flatpak-1.0",
            "binary_version": "1.6.5-0ubuntu0.5"
        },
        {
            "binary_name": "libflatpak0",
            "binary_version": "1.6.5-0ubuntu0.5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34079.json"
Ubuntu:22.04:LTS
flatpak

Package

Name
flatpak
Purl
pkg:deb/ubuntu/flatpak?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "flatpak",
            "binary_version": "1.12.7-1ubuntu0.1"
        },
        {
            "binary_name": "flatpak-tests",
            "binary_version": "1.12.7-1ubuntu0.1"
        },
        {
            "binary_name": "gir1.2-flatpak-1.0",
            "binary_version": "1.12.7-1ubuntu0.1"
        },
        {
            "binary_name": "libflatpak0",
            "binary_version": "1.12.7-1ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34079.json"
Ubuntu:24.04:LTS
flatpak

Package

Name
flatpak
Purl
pkg:deb/ubuntu/flatpak?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
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

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "flatpak",
            "binary_version": "1.14.6-1ubuntu0.1"
        },
        {
            "binary_name": "flatpak-tests",
            "binary_version": "1.14.6-1ubuntu0.1"
        },
        {
            "binary_name": "gir1.2-flatpak-1.0",
            "binary_version": "1.14.6-1ubuntu0.1"
        },
        {
            "binary_name": "libflatpak0",
            "binary_version": "1.14.6-1ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34079.json"
Ubuntu:25.10
flatpak

Package

Name
flatpak
Purl
pkg:deb/ubuntu/flatpak?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.16.0-2
1.16.1-1build1
1.16.1-2
1.16.1-2ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "flatpak",
            "binary_version": "1.16.1-2ubuntu1"
        },
        {
            "binary_name": "flatpak-tests",
            "binary_version": "1.16.1-2ubuntu1"
        },
        {
            "binary_name": "gir1.2-flatpak-1.0",
            "binary_version": "1.16.1-2ubuntu1"
        },
        {
            "binary_name": "libflatpak0",
            "binary_version": "1.16.1-2ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34079.json"
Ubuntu:26.04:LTS
flatpak

Package

Name
flatpak
Purl
pkg:deb/ubuntu/flatpak?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

1.*
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

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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-34079.json"