4 results · Feed
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High 8.7
Black: GitHub Action installs unvalidated required-version from pyproject.toml
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…
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High 8.7
Black: Arbitrary file writes from unsanitized user input in cache file name
Black is the uncompromising Python code formatter. Starting in version 24.3.0 and prior to version 26.3.1, Black writes a cache file, the name of which is computed from various formatting options. The value of the --python-cell-magics option was placed in the…
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High 8.7CVE-2026-31900 Public exploit
Black's vulnerable version parsing leads to RCE in GitHub Action
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 co…
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Medium 5.3
Black vulnerable to Regular Expression Denial of Service (ReDoS)
Versions of the package black before 24.3.0 are vulnerable to Regular Expression Denial of Service (ReDoS) via the lines_with_leading_tabs_expanded function in the strings.py file. An attacker could exploit this vulnerability by crafting a malicious input tha…