Pillow is a Python imaging library. From 9.1.0 until 13.0.0, Pillow can disclose uninitialized stack memory when Image.quantize() uses an empty palette. ImagingPaletteCacheUpdate() leaves a local cache array uninitialized when the palette has zero entries, and the conversion path emits those bytes as output pixel indices. An attacker who controls the palette image can obtain stack contents from a returned PNG or GIF. This can disclose addresses and stack-canary data without an out-of-bounds access, memory corruption, or process crash. 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, Pillow can disclose uninitialized stack
    memory when Image.quantize() uses an empty palette. ImagingPaletteCacheUpdate() leaves a local cache array
    uninitialized when the palette has zero entries, and the conversion path emits those bytes as output pixel
    indices. An attacker who controls the palette image can obtain stack contents from a returned PNG or GIF.
    This can disclose addresses and stack-canary data without an out-of-bounds access, memory corruption, or
    process crash. This issue is fixed in version 13.0.0. (CVE-2026-112898)

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, Pillow can disclose uninitialized stack     memory when Image.quantize() uses an empty palette. ImagingPaletteCacheUpdate() leaves a local cache array     uninitialized when the palette has zero entries, and the conversion path emits those bytes as output pixel     indices. An attacker who controls the palette image can obtain stack contents from a returned PNG or GIF.
    This can disclose addresses and stack-canary data without an out-of-bounds access, memory corruption, or     process crash. This issue is fixed in version 13.0.0. (CVE-2026-112898)

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
476882	Chainguard: openstack-horizon-2025.2: security update to 25.5.2_git20260914-r12	Tenable Cloud Security	Chainguard Local Security Checks	Local	medium
476882	Chainguard: openstack-horizon-2025.2: security update to 25.5.2_git20260914-r12	Tenable Self-Hosted Container Security	Chainguard Local Security Checks	Local	medium
476588	SCA: security update for Pillow (GHSA-rfgq-q3w2-pmv2)	Tenable Cloud Security	SCA Checks	Local	medium
476588	SCA: security update for Pillow (GHSA-rfgq-q3w2-pmv2)	Tenable Self-Hosted Container Security	SCA Checks	Local	medium
367574	Linux Distros Unpatched Vulnerability : CVE-2026-112898	Nessus	Misc.	Local	medium

Detections

Analytics

CVE-2026-112898

medium

Tenable Plugins

critical

medium

medium

medium

medium

medium