OPENSUSE-SU-2026:20417-1

Vulnerability from csaf_opensuse - Published: 2026-03-24 19:40 - Updated: 2026-03-24 19:40
Summary
Security update for python-black
Severity
Important
Notes
Title of the patch: Security update for python-black
Description of the patch: This update for python-black fixes the following issues: - 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).
Patchnames: openSUSE-Leap-16.0-437
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Vendor Fix To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or "zypper patch".

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      "notes": [
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          "category": "general",
          "text": "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.",
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          "text": "Black is the uncompromising Python code formatter. Prior to 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 filename without sanitization, which allowed an attacker who controls the value of this argument to write cache files to arbitrary file system locations. Fixed in Black 26.3.1.",
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}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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