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CVE-2026-114134 Details

Description

Black is the uncompromising Python code formatter. Prior to 26.10.1, the Black GitHub Action with use_pyproject: true accepts tool.black.required-version from pyproject.toml without validating that it is a released Black version specifier. An attacker who can submit a pull request can change that field to a direct reference to attacker-controlled code, causing the workflow to install and execute the code in the victim repository's GitHub Actions context. This issue is fixed in version 26.10.1.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/psf/black/commit/ac1f71563aeccf73cf13ece00f231d9d6c66a514	[email protected]
https://github.com/psf/black/pull/5510	[email protected]
https://github.com/psf/black/security/advisories/GHSA-cg8m-r9f2-5wm2	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-829	Inclusion of Functionality from Untrusted Control Sphere	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

1 change record found show changes