An update for flatpak is now available for openEuler-24.03-LTS-SP4,openEuler-20.03-LTS-SP4,openEuler-22.03-LTS-SP4,openEuler-24.03-LTS-SP1,openEuler-24.03-LTS-SP3 Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2026-4098 Final 1.0 1.0 2026-09-25 Initial 2026-09-25 2026-09-25 openEuler SA Tool V1.0 2026-09-25 flatpak security update An update for flatpak is now available for openEuler-24.03-LTS-SP4,openEuler-20.03-LTS-SP4,openEuler-22.03-LTS-SP4,openEuler-24.03-LTS-SP1,openEuler-24.03-LTS-SP3 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) An update for flatpak is now available for openEuler-24.03-LTS-SP4,openEuler-20.03-LTS-SP4,openEuler-22.03-LTS-SP4,openEuler-24.03-LTS-SP1,openEuler-24.03-LTS-SP3. openEuler Security has rated this update as having a security impact of high. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section. High flatpak https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4098 https://www.openeuler.org/en/security/cve/detail/?cveId=CVE-2026-90616 https://nvd.nist.gov/vuln/detail/CVE-2026-90616 openEuler-24.03-LTS-SP4 openEuler-20.03-LTS-SP4 openEuler-22.03-LTS-SP4 openEuler-24.03-LTS-SP1 openEuler-24.03-LTS-SP3 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 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 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 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 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 flatpak-1.10.2-13.oe2403sp4.src.rpm flatpak-1.0.3-16.oe2003sp4.src.rpm flatpak-1.10.2-13.oe2203sp4.src.rpm flatpak-1.10.2-13.oe2403sp1.src.rpm flatpak-1.10.2-13.oe2403sp3.src.rpm 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 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 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 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 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 flatpak-help-1.10.2-13.oe2403sp4.noarch.rpm flatpak-help-1.0.3-16.oe2003sp4.noarch.rpm flatpak-help-1.10.2-13.oe2203sp4.noarch.rpm flatpak-help-1.10.2-13.oe2403sp1.noarch.rpm flatpak-help-1.10.2-13.oe2403sp3.noarch.rpm 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. 2026-09-25 CVE-2026-90616 openEuler-24.03-LTS-SP4 openEuler-20.03-LTS-SP4 openEuler-22.03-LTS-SP4 openEuler-24.03-LTS-SP1 openEuler-24.03-LTS-SP3 High 7.4 AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H flatpak security update 2026-09-25 https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4098