CVE-2026-34078

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Source
https://cve.org/CVERecord?id=CVE-2026-34078
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-34078.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-34078
Aliases
  • GHSA-cc2q-qc34-jprg
Downstream
Published
2026-04-07T21:27:45.643Z
Modified
2026-04-09T11:45:34.468216Z
Severity
  • 9.3 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
Flatpak has a complete sandbox escape leading to host file access and code execution in the host context
Details

Flatpak is a Linux application sandboxing and distribution framework. Prior to 1.16.4, the Flatpak portal accepts paths in the sandbox-expose options which can be app-controlled symlinks pointing at arbitrary paths. Flatpak run mounts the resolved host path in the sandbox. This gives apps access to all host files and can be used as a primitive to gain code execution in the host context. This vulnerability is fixed in 1.16.4.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-61"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34078.json"
}
References

Affected packages

Git / github.com/flatpak/flatpak

Affected ranges

Type
GIT
Repo
https://github.com/flatpak/flatpak
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
2cc39deb237776614f8bdecae1892e5229aeca60
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.16.4"
        }
    ]
}

Affected versions

0.*
0.1
0.10.0
0.10.1
0.10.2
0.11.1
0.11.2
0.11.3
0.11.4
0.11.5
0.11.6
0.11.7
0.11.8
0.11.8.1
0.11.8.2
0.11.8.3
0.2
0.2.1
0.3
0.3.1
0.3.2
0.3.3
0.3.4
0.3.5
0.3.6
0.4.0
0.4.1
0.4.10
0.4.11
0.4.12
0.4.13
0.4.2
0.4.2.1
0.4.3
0.4.4
0.4.5
0.4.6
0.4.7
0.4.8
0.4.9
0.5.0
0.5.1
0.5.2
0.6.0
0.6.1
0.6.10
0.6.11
0.6.12
0.6.13
0.6.14
0.6.2
0.6.3
0.6.4
0.6.5
0.6.6
0.6.7
0.6.8
0.6.9
0.8.0
0.8.1
0.9.1
0.9.10
0.9.11
0.9.12
0.9.2
0.9.3
0.9.4
0.9.5
0.9.6
0.9.7
0.9.8
0.9.9
0.9.98
0.9.98.1
0.9.98.2
0.9.99
0.99.1
0.99.2
0.99.3
1.*
1.0.0
1.0.1
1.0.2
1.0.3
1.1.0
1.1.1
1.1.2
1.1.3
1.10.0
1.10.1
1.11.1
1.11.2
1.11.3
1.12.0
1.13.1
1.13.2
1.13.3
1.14.0
1.15.0
1.15.1
1.15.10
1.15.11
1.15.12
1.15.2
1.15.3
1.15.4
1.15.6
1.15.7
1.15.8
1.15.9
1.15.91
1.16.0
1.16.1
1.16.2
1.16.3
1.2.0
1.2.1
1.3.0
1.3.1
1.3.2
1.3.3
1.3.4
1.4.0
1.5.0
1.5.1
1.5.2
1.6.0
1.6.1
1.6.2
1.7.1
1.7.2
1.7.3
1.8.0
1.9.1
1.9.2
1.9.3

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-34078.json"