Pillow is a Python imaging library. From version 4.2.0 to before version 12.2.0, an attacker can supply a malicious PDF that causes the process to hang indefinitely, consuming 100% CPU and making the application unresponsive. This issue has been patched in version 12.2.0.

The remote Debian 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6357 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6357-1                   security@debian.org     https://www.debian.org/security/                       Moritz Muehlenhoff     June 21, 2026                         https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : pillow     CVE ID         : CVE-2026-42308 CVE-2026-42310 CVE-2026-42311

    Multiple security vulnerabilities have been discovered in Pillow, a     Python imaging library, which could result in denial of service or the     execution of arbitrary code if malformed files are processed.

    For the stable distribution (trixie), these problems have been fixed in     version 11.1.0-5+deb13u3.

    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 these issues but has instead relied only on the application's self-reported version number.

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8399-1 advisory.

    It was discovered that Pillow incorrectly handled large glyph advance values in fonts. An attacker could     possibly use this issue to cause Pillow to crash, resulting in a denial of service. (CVE-2026-42308)

    It was discovered that Pillow incorrectly handled nested coordinate lists in certain APIs. An attacker     could possibly use this issue to cause Pillow to crash, resulting in a denial of service. This issue only     affected Ubuntu 25.10 and Ubuntu 26.04 LTS. (CVE-2026-42309)

    It was discovered that Pillow incorrectly handled certain malformed PDF files. An attacker could possibly     use this issue to cause Pillow to use excessive resources, leading to a denial of service.
    (CVE-2026-42310)

    It was discovered that Pillow incorrectly handled certain malformed PSD files. An attacker could possibly     use this issue to cause Pillow to crash, resulting in a denial of service, or to execute arbitrary code.
    This issue only affected Ubuntu 25.10 and Ubuntu 26.04 LTS. (CVE-2026-42311)

Tenable has extracted the preceding description block directly from the Ubuntu 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 remote SUSE Linux SLES16 / SLES_SAP16 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:21861-1 advisory.

    This update for python-Pillow fixes the following issues

    - CVE-2026-42308: integer overflow in font processing can lead to denial of service (bsc#1265359).
    - CVE-2026-42309: heap buffer overflow when processing nested list coordinates (bsc#1265153).
    - CVE-2026-42310: infinite loop and resource exhaustion when processing specially crafted PDFs     (bsc#1265154).

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 remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:20831-1 advisory.

    This update for python-Pillow fixes the following issues

    - CVE-2026-42308: integer overflow in font processing can lead to denial of service (bsc#1265359).
    - CVE-2026-42309: heap buffer overflow when processing nested list coordinates (bsc#1265153).
    - CVE-2026-42310: infinite loop and resource exhaustion when processing specially crafted PDFs     (bsc#1265154).

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.

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1712 advisory.

    Pillow is a Python imaging library. Prior to version 12.2.0, if a font advances for each glyph by an     exceeding large amount, when Pillow keeps track of the current position, it may lead to an integer     overflow. This issue has been patched in version 12.2.0. (CVE-2026-42308)

    Pillow is a Python imaging library. From version 4.2.0 to before version 12.2.0, an attacker can supply a     malicious PDF that causes the process to hang indefinitely, consuming 100% CPU and making the application     unresponsive. This issue has been patched in version 12.2.0. (CVE-2026-42310)

    Pillow is a Python imaging library. From version 10.3.0 to before version 12.2.0, processing a malicious     PSD file could lead to memory corruption, potentially resulting in a crash or arbitrary code execution.
    This issue has been patched in version 12.2.0. (CVE-2026-42311)

Tenable has extracted the preceding description block directly from the tested product 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 remote SUSE Linux SLES15 host has a package installed that is affected by a vulnerability as referenced in the SUSE- SU-2026:1842-1 advisory.

    This update for python-Pillow fixes the following issue

    - CVE-2026-42310: infinite loop and resource exhaustion when processing specially crafted PDFs     (bsc#1265154).

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 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. From version 4.2.0 to before version 12.2.0, an attacker can supply a     malicious PDF that causes the process to hang indefinitely, consuming 100% CPU and making the application     unresponsive. This issue has been patched in version 12.2.0. (CVE-2026-42310)

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

ID	Name	Product	Family	Severity
321875	Debian dsa-6357 : python-pil-doc - security update	Nessus	Debian Local Security Checks	high
320408	Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : Pillow vulnerabilities (USN-8399-1)	Nessus	Ubuntu Local Security Checks	high
318243	SUSE SLES16 Security Update : python-Pillow (SUSE-SU-2026:21861-1)	Nessus	SuSE Local Security Checks	medium
318065	openSUSE 16 Security Update : python-Pillow (openSUSE-SU-2026:20831-1)	Nessus	SuSE Local Security Checks	medium
316954	Amazon Linux 2023 : python3-pillow, python3-pillow-devel, python3-pillow-tk (ALAS2023-2026-1712)	Nessus	Amazon Linux Local Security Checks	high
315063	SUSE SLES15 Security Update : python-Pillow (SUSE-SU-2026:1842-1)	Nessus	SuSE Local Security Checks	medium
313620	Linux Distros Unpatched Vulnerability : CVE-2026-42310	Nessus	Misc.	medium

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