shutil.unpack_archive() doesn't check for Windows absolute paths in ZIPs
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6epss 0.6%
exploitation probability
0.6%top 55% of all CVEs
observed exploitation
nono source reports it
If `shutil.unpack_archive()` is given a ZIP archive with an absolute Windows path containing a drive (`C:\\...`) then the archive will be extracted outside the target directory which is different than other operating systems. Only Windows is affected by this vulnerability.
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Affected products
Python Software Foundation · CPythonReferences
https://github.com/python/cpython/commit/1071290169f85c09cf767c1099564a9426cdc7e8https://github.com/python/cpython/commit/65b255416ae217bf0e22085be3c1976cea18bd8chttps://github.com/python/cpython/commit/7ef7dd0a74f47facd1fadcbc77f8fb03beb5eb4dhttps://github.com/python/cpython/commit/8e13025747e1ca72e86d1f35637123f9c306f0cbhttps://github.com/python/cpython/commit/8ee6aff14054b37b53e47194a2fa313e98163c94https://github.com/python/cpython/commit/a6650a2cdf0c49fb8ce0c982903aa2aa274beefehttps://github.com/python/cpython/commit/ab5ef98af693bded74a738570e81ea70abef2840https://github.com/python/cpython/commit/b01e594fbe754a960212f908d047294e880b52fdhttps://github.com/python/cpython/commit/ba0aca3bffce431fe2fbd53ca4cd6a717a2e2c19https://github.com/python/cpython/commit/fc829e88753858c8ac669594bf0093f44948c0f4https://github.com/python/cpython/issues/146581https://github.com/python/cpython/pull/146591