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

CAO 7.5CVE-2026-32274 · GHSA-3936-cmfr-pm3m · PYSEC-2026-2121 · Công bố 12/03/2026 · cập nhật 03/08/2026

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
black PyPI	`≥ 24.3.0, < 26.3.1< 26.3.1`	`26.3.1`
black python	`< 26.3.1`	`26.3.1`

Mô tả

Impact

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.

Patches

Fixed in Black 26.3.1.

Workarounds

Do not allow untrusted user input into the value of the --python-cell-magics option.

Mô tả của NVD

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.