PT-2026-97348

Name of the Vulnerable Software and Affected Versions Flatpak affected versions not specified Description A flaw exists where a malicious SDK container can trigger arbitrary file writes on the host system. This occurs when a developer executes the command flatpak build-init --writable-sdk...

PT-2026-97418

Name of the Vulnerable Software and Affected Versions Flatpak versions prior to 1.18.1 Description The revokefs writer, utilized by the flatpak-system-helper to receive repository data from unprivileged callers, fails to prevent symlink traversal despite rejecting literal .. components in file...

PT-2026-97347

Name of the Vulnerable Software and Affected Versions Flatpak affected versions not specified Description A malicious or compromised repository can write attacker-controlled content to arbitrary locations on the host filesystem. This occurs through the extract extra data function. On system...

CVE-2026-96808: UNIX Symbolic Link (Symlink) Following

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 rejecting literal .. components but did not prevent symlink traversal. A malicious local user in an active local session could obtain two...

Linux Distros Unpatched Vulnerability : CVE-2026-96280

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

Linux Distros Unpatched Vulnerability : CVE-2026-96275

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A malicious or compromised Flatpak repository can write attacker-controlled content to arbitrary locations on the host filesystem via extractextradata. On syste...

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...

CVE-2026-96276: Improper Limitation of a Pathname to a Restricted Directory

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...

CVE-2026-96807: UNIX Symbolic Link (Symlink) Following

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 location. The filenames and content are not attacker controlled, making this hard to exploit...

Linux Distros Unpatched Vulnerability : CVE-2026-96282

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A malicious Flatpak extension can probe the host filesystem to determine what files and directories exist at arbitrary paths, and host directory listings can be...

PT-2026-97415

Name of the Vulnerable Software and Affected Versions Flatpak versions prior to 1.18.1 Description A malicious sandboxed application can replace the /.var/app/$appid/.ld.so file with a symlink. This action causes the regenerate ld cache function to write files to an arbitrary location. Because th...

Linux Distros Unpatched Vulnerability : CVE-2026-96276

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

Debian dsa-6510 : xdg-dbus-proxy - security update

The remote Debian 13 host has packages installed that are affected by a vulnerability as referenced in the dsa-6510 advisory. - ------------------------------------------------------------------------- Debian Security Advisory DSA-6510-1 [email protected] https://www.debian.org/security/ Albert...

Linux Distros Unpatched Vulnerability : CVE-2026-96281

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - 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...

Linux Distros Unpatched Vulnerability : CVE-2026-92162

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Debian Linux - flatpak - None Ubuntu Linux - security update CVE-2026-92162 Note that Nessus relies on the presence of the package as reported by the vendor...

PT-2026-105461

This update for flatpak fixes the following issues: - CVE-2026-90616: missing symlink protection allows a malicious sandboxed app to obtain arbitrary read and write access to files on the host bsc1280236. - CVE-2026-92162: path traversal via unvalidated arch parameter in DeployAppstream bsc128251...

OPENSUSE-SU-2026:11845-1 flatpak-builder-1.4.12-1.1 on GA media

These are all security issues fixed in the flatpak-builder-1.4.12-1.1 package on the GA media of openSUSE Tumbleweed...

Linux Distros Unpatched Vulnerability : CVE-2026-93676

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - xdg-dbus-proxy incorrectly filters D-Bus broadcast messages, bypassing configured path, interface, and member restrictions. This allows a sandboxed Flatpak...

SUSE CVE-2026-93676

xdg-dbus-proxy incorrectly filters D-Bus broadcast messages, bypassing configured path, interface, and member restrictions. This allows a sandboxed Flatpak application to intercept broadcast signals on the D-Bus session bus and AT-SPI bus that should be restricted, potentially exposing sensitive...

USN-8779-2: Bubblewrap regression

USN-8779-1 fixed vulnerabilities in Bubblewrap. Unfortunately, the fix for CVE-2026-87766 introduced a regression in symlink resolution, preventing certain Flatpak applications from launching. This update reverts that fix until a complete fix is available. We apologize for the inconvenience...