OESA-2026-4098

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Source
https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2026-4098
Import Source
https://repo.openeuler.org/security/data/osv/OESA-2026-4098.json
JSON Data
https://api.osv.dev/v1/vulns/OESA-2026-4098
Upstream
Published
2026-09-25T01:28:23Z
Modified
2026-09-25T01:45:12Z
Severity
  • 7.4 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
flatpak security update
Details

flatpak is a system for building, distributing and running sandboxed desktop applications on Linux. See https://wiki.gnome.org/Projects/SandboxedApps for more information.

Security Fix(es):

In Flatpak before 1.18.1, a malicious sandboxed app can obtain arbitrary read and write access to files on the host, which can be escalated to arbitrary code execution on the host, a different vulnerability than CVE-2026-76925. Flatpak creates a few app data directories (e.g., /var/cache, /var/data, /var/config, and /var/tmp) in every sandbox on every app launch where, in some cases, components of the path are attacker-controlled. Missing symlink protection can redirect the directories. Some of these directories are bind-mounted by Flatpak by passing the path (e.g., /home/user/.var/app/APP_ID/cache/tmp), which contains attacker-controlled directories (tmp) to bwrap --bind SRC DST. bwrap passes the path on to the kernel, which then follows symlinks. A malicious symlink can point to arbitrary locations on the host and it will become mounted inside the sandbox.(CVE-2026-90616)

Database specific 
{
    "severity":  "High"
}
References

Affected packages

openEuler:20.03-LTS-SP4
flatpak

Package

Name
flatpak
Purl
pkg:rpm/openEuler/flatpak&distro=openEuler-20.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.0.3-16.oe2003sp4

Ecosystem specific 

{
    "aarch64":  [
        "flatpak-1.0.3-16.oe2003sp4.aarch64.rpm",
        "flatpak-debuginfo-1.0.3-16.oe2003sp4.aarch64.rpm",
        "flatpak-debugsource-1.0.3-16.oe2003sp4.aarch64.rpm",
        "flatpak-devel-1.0.3-16.oe2003sp4.aarch64.rpm"
    ],
    "noarch":  [
        "flatpak-help-1.0.3-16.oe2003sp4.noarch.rpm"
    ],
    "src":  [
        "flatpak-1.0.3-16.oe2003sp4.src.rpm"
    ],
    "x86_64":  [
        "flatpak-1.0.3-16.oe2003sp4.x86_64.rpm",
        "flatpak-debuginfo-1.0.3-16.oe2003sp4.x86_64.rpm",
        "flatpak-debugsource-1.0.3-16.oe2003sp4.x86_64.rpm",
        "flatpak-devel-1.0.3-16.oe2003sp4.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-4098.json"
openEuler:22.03-LTS-SP4
flatpak

Package

Name
flatpak
Purl
pkg:rpm/openEuler/flatpak&distro=openEuler-22.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.10.2-13.oe2203sp4

Ecosystem specific 

{
    "aarch64":  [
        "flatpak-1.10.2-13.oe2203sp4.aarch64.rpm",
        "flatpak-debuginfo-1.10.2-13.oe2203sp4.aarch64.rpm",
        "flatpak-debugsource-1.10.2-13.oe2203sp4.aarch64.rpm",
        "flatpak-devel-1.10.2-13.oe2203sp4.aarch64.rpm"
    ],
    "noarch":  [
        "flatpak-help-1.10.2-13.oe2203sp4.noarch.rpm"
    ],
    "src":  [
        "flatpak-1.10.2-13.oe2203sp4.src.rpm"
    ],
    "x86_64":  [
        "flatpak-1.10.2-13.oe2203sp4.x86_64.rpm",
        "flatpak-debuginfo-1.10.2-13.oe2203sp4.x86_64.rpm",
        "flatpak-debugsource-1.10.2-13.oe2203sp4.x86_64.rpm",
        "flatpak-devel-1.10.2-13.oe2203sp4.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-4098.json"
openEuler:24.03-LTS-SP1
flatpak

Package

Name
flatpak
Purl
pkg:rpm/openEuler/flatpak&distro=openEuler-24.03-LTS-SP1

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.10.2-13.oe2403sp1

Ecosystem specific 

{
    "aarch64":  [
        "flatpak-1.10.2-13.oe2403sp1.aarch64.rpm",
        "flatpak-debuginfo-1.10.2-13.oe2403sp1.aarch64.rpm",
        "flatpak-debugsource-1.10.2-13.oe2403sp1.aarch64.rpm",
        "flatpak-devel-1.10.2-13.oe2403sp1.aarch64.rpm"
    ],
    "noarch":  [
        "flatpak-help-1.10.2-13.oe2403sp1.noarch.rpm"
    ],
    "src":  [
        "flatpak-1.10.2-13.oe2403sp1.src.rpm"
    ],
    "x86_64":  [
        "flatpak-1.10.2-13.oe2403sp1.x86_64.rpm",
        "flatpak-debuginfo-1.10.2-13.oe2403sp1.x86_64.rpm",
        "flatpak-debugsource-1.10.2-13.oe2403sp1.x86_64.rpm",
        "flatpak-devel-1.10.2-13.oe2403sp1.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-4098.json"
openEuler:24.03-LTS-SP3
flatpak

Package

Name
flatpak
Purl
pkg:rpm/openEuler/flatpak&distro=openEuler-24.03-LTS-SP3

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.10.2-13.oe2403sp3

Ecosystem specific 

{
    "aarch64":  [
        "flatpak-1.10.2-13.oe2403sp3.aarch64.rpm",
        "flatpak-debuginfo-1.10.2-13.oe2403sp3.aarch64.rpm",
        "flatpak-debugsource-1.10.2-13.oe2403sp3.aarch64.rpm",
        "flatpak-devel-1.10.2-13.oe2403sp3.aarch64.rpm"
    ],
    "noarch":  [
        "flatpak-help-1.10.2-13.oe2403sp3.noarch.rpm"
    ],
    "src":  [
        "flatpak-1.10.2-13.oe2403sp3.src.rpm"
    ],
    "x86_64":  [
        "flatpak-1.10.2-13.oe2403sp3.x86_64.rpm",
        "flatpak-debuginfo-1.10.2-13.oe2403sp3.x86_64.rpm",
        "flatpak-debugsource-1.10.2-13.oe2403sp3.x86_64.rpm",
        "flatpak-devel-1.10.2-13.oe2403sp3.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-4098.json"
openEuler:24.03-LTS-SP4
flatpak

Package

Name
flatpak
Purl
pkg:rpm/openEuler/flatpak&distro=openEuler-24.03-LTS-SP4

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
1.10.2-13.oe2403sp4

Ecosystem specific 

{
    "aarch64":  [
        "flatpak-1.10.2-13.oe2403sp4.aarch64.rpm",
        "flatpak-debuginfo-1.10.2-13.oe2403sp4.aarch64.rpm",
        "flatpak-debugsource-1.10.2-13.oe2403sp4.aarch64.rpm",
        "flatpak-devel-1.10.2-13.oe2403sp4.aarch64.rpm"
    ],
    "noarch":  [
        "flatpak-help-1.10.2-13.oe2403sp4.noarch.rpm"
    ],
    "src":  [
        "flatpak-1.10.2-13.oe2403sp4.src.rpm"
    ],
    "x86_64":  [
        "flatpak-1.10.2-13.oe2403sp4.x86_64.rpm",
        "flatpak-debuginfo-1.10.2-13.oe2403sp4.x86_64.rpm",
        "flatpak-debugsource-1.10.2-13.oe2403sp4.x86_64.rpm",
        "flatpak-devel-1.10.2-13.oe2403sp4.x86_64.rpm"
    ]
}

Database specific

source 
"https://repo.openeuler.org/security/data/osv/OESA-2026-4098.json"