[Medium} Patch python-virtualenv for CVE-2026-13346

[Ratiranjan5]

Merge Checklist

All boxes should be checked before merging the PR (just tick any boxes which don't apply to this PR)

• The toolchain has been rebuilt successfully (or no changes were made to it)
• The toolchain/worker package manifests are up-to-date
• Any updated packages successfully build (or no packages were changed)
• Packages depending on static components modified in this PR (Golang, *-static subpackages, etc.) have had their Release tag incremented.
• Package tests (%check section) have been verified with RUN_CHECK=y for existing SPEC files, or added to new SPEC files
• All package sources are available
• cgmanifest files are up-to-date and sorted (./cgmanifest.json, ./toolkit/scripts/toolchain/cgmanifest.json, .github/workflows/cgmanifest.json)
• LICENSE-MAP files are up-to-date (./LICENSES-AND-NOTICES/SPECS/data/licenses.json, ./LICENSES-AND-NOTICES/SPECS/LICENSES-MAP.md, ./LICENSES-AND-NOTICES/SPECS/LICENSE-EXCEPTIONS.PHOTON)
• All source files have up-to-date hashes in the *.signatures.json files
• sudo make go-tidy-all and sudo make go-test-coverage pass
• Documentation has been updated to match any changes to the build system
• Ready to merge

---

Summary
Patch python-virtualenv for CVE-2026-13346

• The python-virtualenv package version 20.36.1 falls within the affected range for CVE-2026-13346, which impacts all pip versions prior to 26.2.

• CVE affects the pip package in python-virtualenv as pip version 25.0.1 and 25.3 are in affected range of < 26.2.

• Patch has been backported manually.

• Patch matches with the upstream patch except that the files tests/unit/test_link.py and news/14110.bugfix.rst are not included as they don't exist in our source code.

• Note on the download.py change in CVE-2026-13346v0.patch:

  • In the upstream patch, the filename is computed inline inside os.path.join, so the fix removes that single line and adds a multi-line join_within_directory(...) call. In our bundled pip (25.0.1), the same logic is written across two lines, the filename is first stored in a filename variable, then joined on the next line. The result is functionally identical to upstream patch.

• Upstream Patch Reference: https://github.com/pypa/pip/commit/10dfb6b9005484578b386f64b9f36982e3dc6679.patch

Change Log

• new file: SPECS/python-virtualenv/CVE-2026-13346v0.patch
• new file: SPECS/python-virtualenv/CVE-2026-13346v1.patch
• modified: SPECS/python-virtualenv/python-virtualenv.spec

Does this affect the toolchain?
NO

Links to CVEs
https://nvd.nist.gov/vuln/detail/CVE-2026-13346

Test Methodology

• Local build was successful.

• Patch applies cleanly

• Installation and Uninstallation on docker image was successful.

• License check script shows no warning.

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