Sourced from virtualenv's releases.

20.36.1

What's Changed

• release 20.36.0 by @​gaborbernat in pypa/virtualenv#3011
• fix: resolve TOCTOU vulnerabilities in app_data and lock directory creation by @​gaborbernat in pypa/virtualenv#3013

Full Changelog: https://github.com/pypa/virtualenv/compare/20.36.0...20.36.1

20.36.0

What's Changed

• release 20.35.3 by @​gaborbernat in pypa/virtualenv#2981
• fix: Prevent NameError when accessing _DISTUTILS_PATCH during file ov… by @​gracetyy in pypa/virtualenv#2982
• Upgrade pip and fix 3.15 picking old wheel by @​gaborbernat in pypa/virtualenv#2989
• release 20.35.4 by @​gaborbernat in pypa/virtualenv#2990
• fix: wrong path on migrated venv by @​sk1234567891 in pypa/virtualenv#2996
• test_too_many_open_files: assert on errno.EMFILE instead of strerror by @​pltrz in pypa/virtualenv#3001
• fix: update filelock dependency version to 3.20.1 to fix CVE CVE-2025-68146 by @​pythonhubdev in pypa/virtualenv#3002
• fix: resolve EncodingWarning in tox upgrade environment by @​gaborbernat in pypa/virtualenv#3007
• Fix Interpreter discovery bug wrt. Microsoft Store shortcut using Latin-1 by @​rahuldevikar in pypa/virtualenv#3006
• Add support for PEP 440 version specifiers in the --python flag. by @​rahuldevikar in pypa/virtualenv#3008

New Contributors

• @​gracetyy made their first contribution in pypa/virtualenv#2982
• @​sk1234567891 made their first contribution in pypa/virtualenv#2996
• @​pltrz made their first contribution in pypa/virtualenv#3001
• @​pythonhubdev made their first contribution in pypa/virtualenv#3002
• @​rahuldevikar made their first contribution in pypa/virtualenv#3006

Full Changelog: https://github.com/pypa/virtualenv/compare/20.35.3...20.36.0

Sourced from virtualenv's changelog.

v20.36.1 (2026-01-09)

Bugfixes - 20.36.1

- Fix TOCTOU vulnerabilities in app_data and lock directory creation that could be exploited via symlink attacks - reported by :user:`tsigouris007`, fixed by :user:`gaborbernat`. (:issue:`3013`)
v20.36.0 (2026-01-07)
Features - 20.36.0

• Add support for PEP 440 version specifiers in the --python flag. Users can now specify Python versions using operators like >=, <=, ~=, etc. For example: virtualenv --python=">=3.12" myenv . (:issue:2994`)

• d0ad11d release 20.36.1
• dec4cec Merge pull request #3013 from gaborbernat/fix-sec
• 5fe5d38 release 20.36.0 (#3011)
• 9719376 release 20.36.0
• 0276db6 Add support for PEP 440 version specifiers in the --python flag. (#3008)
• 4f900c2 Fix Interpreter discovery bug wrt. Microsoft Store shortcut using Latin-1 (#3...
• 13afcc6 fix: resolve EncodingWarning in tox upgrade environment (#3007)
• 31b5d31 [pre-commit.ci] pre-commit autoupdate (#2997)
• 7c28422 fix: update filelock dependency version to 3.20.1 to fix CVE CVE-2025-68146 (...
• 365628c test_too_many_open_files: assert on errno.EMFILE instead of strerror (#3001)
• Additional commits viewable in compare view

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot merge will merge this PR after your CI passes on it
• @dependabot squash and merge will squash and merge this PR after your CI passes on it
• @dependabot cancel merge will cancel a previously requested merge and block automerging
• @dependabot reopen will reopen this PR if it is closed
• @dependabot close will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually
• @dependabot show <dependency name> ignore conditions will show all of the ignore conditions of the specified dependency
• @dependabot ignore <dependency name> major version will close this group update PR and stop Dependabot creating any more for the specific dependency's major version (unless you unignore this specific dependency's major version or upgrade to it yourself)
• @dependabot ignore <dependency name> minor version will close this group update PR and stop Dependabot creating any more for the specific dependency's minor version (unless you unignore this specific dependency's minor version or upgrade to it yourself)
• @dependabot ignore <dependency name> will close this group update PR and stop Dependabot creating any more for the specific dependency (unless you unignore this specific dependency or upgrade to it yourself)
• @dependabot unignore <dependency name> will remove all of the ignore conditions of the specified dependency
• @dependabot unignore <dependency name> <ignore condition> will remove the ignore condition of the specified dependency and ignore conditions
  You can disable automated security fix PRs for this repo from the Security Alerts page.