Pillow is a Python imaging library. From 9.1.0 until 13.0.0, BmpRleDecoder.decode() in src/PIL/BmpImagePlugin.py permits crafted RLE BMP delta escapes and absolute-mode runs to append beyond the remaining dest_length without a per-branch cap. A delta can add roughly 255 image rows in one iteration, so a kilobyte-sized file with a large but permitted width can expand the data bytearray to hundreds of megabytes or more, causing memory-exhaustion denial of service. This issue is fixed in version 13.0.0.

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the b9a3fd21-d2af-11f1-bae2-3497f65b111b advisory.

    The Pillow project published security advisories for issues fixed               in release 13.0.0.  They include an argument injection in the               Ghostscript call used for EPS images, heap buffer overflows in               several image decoders that can lead to code execution, and               infinite loops and unbounded memory use when opening crafted               image files.

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

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

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - Pillow is a Python imaging library. From 9.1.0 until 13.0.0, BmpRleDecoder.decode() in
    src/PIL/BmpImagePlugin.py permits crafted RLE BMP delta escapes and absolute-mode runs to append beyond
    the remaining dest_length without a per-branch cap. A delta can add roughly 255 image rows in one
    iteration, so a kilobyte-sized file with a large but permitted width can expand the data bytearray to
    hundreds of megabytes or more, causing memory-exhaustion denial of service. This issue is fixed in version
    13.0.0. (CVE-2026-96638)

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 9.1.0 until 13.0.0, BmpRleDecoder.decode() in     src/PIL/BmpImagePlugin.py permits crafted RLE BMP delta escapes and absolute-mode runs to append beyond     the remaining dest_length without a per-branch cap. A delta can add roughly 255 image rows in one     iteration, so a kilobyte-sized file with a large but permitted width can expand the data bytearray to     hundreds of megabytes or more, causing memory-exhaustion denial of service. This issue is fixed in version     13.0.0. (CVE-2026-96638)

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

ID	Name	Product	Family	Type	Severity
373482	FreeBSD : Pillow -- multiple vulnerabilities (b9a3fd21-d2af-11f1-bae2-3497f65b111b)	Nessus	FreeBSD Local Security Checks	Local	critical
476858	SCA: security update for pillow (GHSA-24rc-8hj2-v98c)	Tenable Cloud Security	SCA Checks	Local	medium
476858	SCA: security update for pillow (GHSA-24rc-8hj2-v98c)	Tenable Self-Hosted Container Security	SCA Checks	Local	medium
370274	Linux Distros Unpatched Vulnerability : CVE-2026-96638	Nessus	Misc.	Local	medium

Detections

Analytics

CVE-2026-96638

medium

Tenable Plugins

critical

medium

medium

medium