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…indows A key such as "America/C:\file" passed validation, and the tzdata loader then joined "C:\file" to the package directory, which replaced it. ANT-2026-IZMAOLCQ
gpshead
added
needs backport to 3.11
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_validate_tzfile_path()now also checks each/-separated component of aZoneInfokey withos.path.splitroot()and raisesValueErrorif it has a drive or root. Before, a key such asAmerica/C:\Windows\win.inipassed validation on Windows, andload_tzdata()joinedC:\Windows\win.inito thetzdatapackage directory, which replaced it. No POSIX key changes behaviour, and all keys in the system time zone database still validate underntpath.I could not run this on Windows. The new test runs the validator with
os.pathswapped forntpath, so it exercises the Windows rules on every platform, but the end-to-end behaviour withtzdatainstalled on Windows is checked by code inspection only.The 3.11 backport needs a manual port:
os.path.splitroot()is new in 3.12, so the automated cherry-pick would produce code that fails there. On 3.11 the check can be written asos.path.splitdrive(component)[0] or os.path.isabs(component).Fixes #160420
ANT-2026-IZMAOLCQ
zoneinfo.ZoneInfoaccepts keys with a drive letter in a later component on Windows #160420