PT-2026-99719

Name of the Vulnerable Software and Affected Versions Flatpak affected versions not specified Description On multi-user systems, a local user with an active session can downgrade a system-wide application to an older version. This is achieved by removing the application's remote reference using t...

CVE-2026-96279: Improper Link Resolution Before File Access

A malicious OCI registry can hardlink arbitrary host files into the extraction directory when a user installs or updates a Flatpak application from an OCI remote, allowing disclosure of arbitrary host file contents. For system-wide installs running as root, this includes sensitive files such as...

CVE-2026-96283: Missing Authorization

By calling org.freedesktop.Flatpak.SystemHelper.CancelPull on another user's pull, the pull is not actually cancelled but removed from internal tracking, making it impossible for the owning user to stop it. Ongoing pulls cannot be stopped...

PT-2026-99723

Name of the Vulnerable Software and Affected Versions Flatpak affected versions not specified Description A flaw exists in the flatpak-system-helper where calling the org.freedesktop.Flatpak.SystemHelper.CancelPull endpoint on a pull belonging to another user fails to actually cancel the operatio...

PT-2026-99722

Name of the Vulnerable Software and Affected Versions Flatpak affected versions not specified Description A malicious extension can probe the host filesystem to determine the existence of files and directories at arbitrary paths. This allows host directory listings to be disclosed to sandboxed...

CVE-2026-96284: Improper Link Resolution Before File Access

A malicious user can get read-access to files in the flatpak-system-helper context if a system OCI repository is configured, because the OCI code paths in the system helper follow symlinks when importing OCI images that are under the user's control...

flatpak-builder-1.4.12-1.1 on GA media (moderate)

flatpak-builder-1.4.12-1.1 on GA media Announcement ID: openSUSE-SU-2026:11845-1 Rating: moderate Cross-References: CVE-2026-86320 CVSS scores: CVE-2026-86320 SUSE : 7.8 CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H CVE-2026-86320 SUSE : 8.5...

[SECURITY] [DLA 4796-1] evolution-data-server security update

Debian LTS Advisory DLA-4796-1 [email protected] https://www.debian.org/lts/security/ Andreans Henriksson September 25, 2026 https://wiki.debian.org/LTS Package : evolution-data-server Version : 3.46.4-2+deb12u1 CVE ID : CVE-2026-2604 Debian Bug : 1128332 An issue has been found in...

OESA-2026-4098 flatpak security update

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 Fixes: In Flatpak before 1.18.1, a malicious sandboxed app can obtain arbitrary read and write access to files on th...

OESA-2026-4074 flatpak-builder security update

Flatpak-builder is a tool for building flatpaks from sources. Security Fixes: A flaw was found in flatpak-builder where Git hooks are not disabled when applying patch sources with use-git-am: true. An attacker who can provide a malicious source containing a Git post-applypatch hook can cause the...

[SECURITY] Fedora 45 Update: flatpak-builder-1.4.12-1.fc45

Flatpak-builder is a tool for building flatpaks from sources. See https://flatpak.org/ for more information...

Linux Distros Unpatched Vulnerability : CVE-2026-96808

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In Flatpak before 1.18.1, the revokefs writer, used by the flatpak-system-helper to receive repository data from unprivileged callers, validated file paths by...

Fedora 45 : flatpak-builder (2026-c450ece4a4)

The remote Fedora 45 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-c450ece4a4 advisory. Update to 1.4.12 Tenable has extracted the preceding description block directly from the Fedora security advisory. Note that Nessus has not tested for this...

Linux Distros Unpatched Vulnerability : CVE-2026-96807

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In Flatpak before 1.18.1, a malicious sandboxed app can replace /.var/app/$appid/.ld.so with a symlink, causing regenerateldcache to write files at an arbitrary...

OPENSUSE-SU-2026:11873-1 flatpak-1.18.3-1.1 on GA media

These are all security issues fixed in the flatpak-1.18.3-1.1 package on the GA media of openSUSE Tumbleweed...

SUSE CVE-2026-96275

A malicious or compromised Flatpak repository can write attacker-controlled content to arbitrary locations on the host filesystem via extractextradata. On system installs, the write happens as root. Two issues combine: files/extra is resolved via path operations that follow symlinks, and blob nam...

SUSE CVE-2026-96276

If a malicious SDK container declares an extension point with a crafted directory path, and a developer runs flatpak build-init --writable-sdk --sdk-extension with that SDK, attacker-chosen files could be written outside the working directory, since the target path is resolved via a function that...

SUSE CVE-2026-96279

A malicious OCI registry can hardlink arbitrary host files into the extraction directory when a user installs or updates a Flatpak application from an OCI remote, allowing disclosure of arbitrary host file contents. For system-wide installs running as root, this includes sensitive files such as...

SUSE CVE-2026-96280

The OCI delta stream parser read sizes as guint64 but passed them to GLib I/O and allocation functions expecting gsize 32 bits on 32-bit systems, causing undersized allocations while subsequent operations use the original 64-bit size, leading to heap buffer overflows. An attacker controlling an O...

SUSE CVE-2026-96281

On a multi-user system, a user with an active local login session could downgrade a system-wide Flatpak app to an older version by removing the app's remote ref via the unprivileged system-helper RemoveLocalRef method, causing the anti-downgrade check to fail to find a reference date. A malicious...