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CVE PROGRAM SOURCE RECORD8.7 High

CVE-2026-32274

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

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Status
Published
Published
Updated
Assigning organization
GitHub_M

Description

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 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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

psf black

  • >= 24.3.0, < 26.3.1affected

References