Black is the uncompromising Python code formatter. Black provides a GitHub action for formatting code. This action supports an option, use_pyproject: true, for reading the version of Black to use from the repository pyproject.toml. A malicious pull request could edit pyproject.toml to use a direct URL reference to a malicious repository. This could lead to arbitrary code execution in the context of the GitHub Action. Attackers could then gain access to secrets or permissions available in the context of the action. Version 26.3.0 fixes this vulnerability.

The remote Fedora 44 host has packages installed that are affected by multiple vulnerabilities as referenced in the FEDORA-2026-3805ba3721 advisory.

    Upgrade to 26.5.1, solves serious vulnerabilities such as:

    * CVE-2026-31900
    * CVE-2026-32274


Tenable has extracted the preceding description block directly from the Fedora 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 a package installed that is affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:20417-1 advisory.

    - CVE-2026-31900: a malicious pyproject.toml edit can lead to arbitrary code execution (bsc#1259546).
    - CVE-2026-32274: arbitrary file writes from unsanitized user input in cache file name (bsc#1259608).

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 Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - Black is the uncompromising Python code formatter. Black provides a GitHub action for formatting code.
    This action supports an option, use_pyproject: true, for reading the version of Black to use from the     repository pyproject.toml. A malicious pull request could edit pyproject.toml to use a direct URL     reference to a malicious repository. This could lead to arbitrary code execution in the context of the     GitHub Action. Attackers could then gain access to secrets or permissions available in the context of the     action. Version 26.3.0 fixes this vulnerability. (CVE-2026-31900)

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

ID	Name	Product	Family	Type	Severity
329275	Fedora 44 : python-black / python-lsp-black / python-pytokens (2026-3805ba3721)	Nessus	Fedora Local Security Checks	Local	high
304229	openSUSE 16 Security Update : python-black (openSUSE-SU-2026:20417-1)	Nessus	SuSE Local Security Checks	Local	high
302062	Linux Distros Unpatched Vulnerability : CVE-2026-31900	Nessus	Misc.	Local	high

Detections

Analytics

CVE-2026-31900

high

Tenable Plugins

high

high

high