Vulnerabilities for black

First version without a known vulnerability: 26.3.1

Details

• GHSA-3936-cmfr-pm3m2026-03-12

  Black: Arbitrary file writes from unsanitized user input in cache file name

  Fixed in: 26.3.1

• PYSEC-2026-21202026-03-11

  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.

  Fixed in: 26.3.0

• GHSA-fj7x-q9j7-g6q62024-03-19

  Black vulnerable to Regular Expression Denial of Service (ReDoS)

  Fixed in: 24.3.0, f00093672628d212b8965a8993cee8bedf5fe9b8