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[3.10] gh-146581: Fix vulnerability in shutil.unpack_archive() for ZIP files on Windows (GH-146591) (GH-149071) by miss-islington · Pull Request #155440 · python/cpython · GitHub

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[3.10] gh-146581: Fix vulnerability in shutil.unpack_archive() for ZIP files on Windows (GH-146591) (GH-149071) - #155440

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pablogsal merged 2 commits into
python:3.10from
miss-islington:backport-7ef7dd0-3.10
Aug 10, 2026
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[3.10] gh-146581: Fix vulnerability in shutil.unpack_archive() for ZIP files on Windows (GH-146591) (GH-149071)#155440
pablogsal merged 2 commits into
python:3.10from
miss-islington:backport-7ef7dd0-3.10

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gh-146581: Fix vulnerability in shutil.unpack_archive() for ZIP files on Windows (GH-146591)

Use ZipFile.extractall() to sanitize file names and extract files.

Files with invalid names (e.g. absolute paths) are now skipped.

Files containing ".." in the name are no longer skipped.
(cherry picked from commit 7ef7dd0)

Co-authored-by: Serhiy Storchaka storchaka@gmail.com
(cherry picked from commit fc829e8)

…for ZIP files on Windows (pythonGH-146591) (pythonGH-149071)

pythongh-146581: Fix vulnerability in shutil.unpack_archive() for ZIP files on Windows (pythonGH-146591)

Use ZipFile.extractall() to sanitize file names and extract files.

Files with invalid names (e.g. absolute paths) are now skipped.

Files containing ".." in the name are no longer skipped.
(cherry picked from commit 7ef7dd0)

Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>
(cherry picked from commit fc829e8)

hugovk commented Aug 10, 2026

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Windows should pass now #153610 is merged.

pablogsal merged commit 1071290 into python:3.10 Aug 10, 2026
14 of 15 checks passed
miss-islington deleted the backport-7ef7dd0-3.10 branch August 10, 2026 07:33
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