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 disclosed to sandboxed applications using the extension. Additionally, unvalidated extension metadata can cause extension content to be mounted at unintended locations inside the sandbox.

The remote SUSE Linux SLES12 / SLES_SAP12 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:4610-1 advisory.

    - CVE-2026-90616: missing symlink protection allows a malicious sandboxed app to obtain arbitrary read and     write access       to files on the host (bsc#1280236).
    - CVE-2026-92162: path traversal via unvalidated `arch` parameter in `DeployAppstream` (bsc#1282514).
    - CVE-2026-96275: arbitrary write access as root via extra-data extraction (bsc#1282515).
    - CVE-2026-96276: arbitrary write in host context via `flatpak build-init` (bsc#1282516).
    - CVE-2026-96281: unprivileged active user can bypass anti-downgrade checks for system apps/runtimes     (bsc#1282519).
    - CVE-2026-96282: extension metadata path traversal file existence oracle (bsc#1282520).
    - CVE-2026-96283: flatpak-system-helper: cross-user `CancelPull` orphans another user's ongoing pull     (bsc#1282521).
    - CVE-2026-96807: fixed-filename writes to arbitrary locations via symlink attack on `.ld.so`     (bsc#1282523).
    - CVE-2026-96808: `revokefs` symlink path traversal allows local privilege escalation via commit tampering       (bsc#1282524).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-130049 advisory.

    Unity Link Advisory UTSA-2026-130049

Tenable has extracted the preceding description block directly from the Unity Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

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 disclosed to sandboxed applications using the     extension. Additionally, unvalidated extension metadata can cause extension content to be mounted at     unintended locations inside the sandbox. (CVE-2026-96282)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
369263	SUSE SLES12 Security Update : flatpak (SUSE-SU-2026:4610-1)	Nessus	SuSE Local Security Checks	Local	high
365840	Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: flatpak (UTSA-2026-130049)	Nessus	Unity Linux Local Security Checks	Local	low
349332	Linux Distros Unpatched Vulnerability : CVE-2026-96282	Nessus	Misc.	Local	low

Detections

Analytics

CVE-2026-96282

low

Tenable Plugins

high

low

low