Pillow is a Python imaging library. Versions 10.3.0 through 12.1.1 did not limit the amount of GZIP-compressed data read when decoding a FITS image, making them vulnerable to decompression bomb attacks. A specially crafted FITS file could cause unbounded memory consumption, leading to denial of service (OOM crash or severe performance degradation). If users are unable to immediately upgrade, they should only open specific image formats, excluding FITS, as a workaround.

The remote Ubuntu 25.10 / 26.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-8211-1 advisory.

    It was discovered that Pillow incorrectly handled certain FITS images. An attacker could possibly use this     issue to cause Pillow to consume resources, leading to a denial of service.

Tenable has extracted the preceding description block directly from the Ubuntu 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 remote Fedora 44 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-334e385bd4 advisory.

    Fix CVE-2026-40192.

Tenable has extracted the preceding description block directly from the Fedora 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 remote openSUSE 16 host has packages installed that are affected by a vulnerability as referenced in the openSUSE- SU-2026:20617-1 advisory.

    This update for python-Pillow fixes the following issue:

    - CVE-2026-40192: Versions 10.3.0 through 12.1.1 did not limit the amount of GZIP-compressed data read     when decoding a       FITS image, making them vulnerable to decompression bomb attacks (bsc#1262184).

Tenable has extracted the preceding description block directly from the SUSE 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 remote Fedora 43 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2026-5ab72c7957 advisory.

    Fix CVE-2026-40192.

Tenable has extracted the preceding description block directly from the Fedora 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 remote Debian 13 host has packages installed that are affected by a vulnerability as referenced in the dsa-6219 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6219-1                   security@debian.org     https://www.debian.org/security/                       Moritz Muehlenhoff     April 19, 2026                        https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : pillow     CVE ID         : CVE-2026-40192

    It was discovered that missing input sanitising in the FITS support of     Pillow, a Python imaging library, could result in denial of service.

    The oldstable distribution (bookworm) is not affected.

    For the stable distribution (trixie), this problem has been fixed in     version 11.1.0-5+deb13u2.

    We recommend that you upgrade your pillow packages.

    For the detailed security status of pillow please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/pillow

    Further information about Debian Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

Tenable has extracted the preceding description block directly from the Debian 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.

  - Pillow is a Python imaging library. Versions 10.3.0 through 12.1.1 did not limit the amount of GZIP-     compressed data read when decoding a FITS image, making them vulnerable to decompression bomb attacks. A     specially crafted FITS file could cause unbounded memory consumption, leading to denial of service (OOM     crash or severe performance degradation). If users are unable to immediately upgrade, they should only     open specific image formats, excluding FITS, as a workaround. (CVE-2026-40192)

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

ID	Name	Product	Family	Severity
310794	Ubuntu 25.10 / 26.04 LTS : Pillow vulnerability (USN-8211-1)	Nessus	Ubuntu Local Security Checks	high
310258	Fedora 44 : python-pillow (2026-334e385bd4)	Nessus	Fedora Local Security Checks	high
310203	openSUSE 16 Security Update : python-Pillow (openSUSE-SU-2026:20617-1)	Nessus	SuSE Local Security Checks	high
307657	Fedora 43 : python-pillow (2026-5ab72c7957)	Nessus	Fedora Local Security Checks	high
307509	Debian dsa-6219 : python-pil-doc - security update	Nessus	Debian Local Security Checks	high
306843	Linux Distros Unpatched Vulnerability : CVE-2026-40192	Nessus	Misc.	high

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