{"id":"BIT-python-min-2026-82049","summary":"tarfile extraction filters allow file modification and content disclosure via hard link to symlink","details":"In CPython 3.13 and earlier, the tarfile module's data and tar extraction filters are vulnerable to crafted archives containing a hard link to a symbolic link. Such archives may cause extraction to modify the permissions or modification time of a file outside the destination directory, or expose the contents of that file within the extracted tree.","aliases":["BIT-libpython-2026-82049","BIT-python-2026-82049","CVE-2026-82049","PSF-0000-CVE-2026-82049","PSF-2026-41"],"modified":"2026-09-21T09:40:56.564565011Z","published":"2026-09-21T09:07:26.945Z","database_specific":{"cpes":["cpe:2.3:a:python:python:*:*:*:*:*:*:*:*"],"severity":"High"},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/09/14/27"},{"type":"WEB","url":"https://github.com/python/cpython/commit/5a57248b22ad3b9aafcaaadae2c304a1923daeca"},{"type":"WEB","url":"https://github.com/python/cpython/commit/b38be2e6cf9d989075ab73412c63e003ebad4ff3"},{"type":"WEB","url":"https://github.com/python/cpython/commit/b8f23e307097552eaea2604383a12ab280520d0d"},{"type":"WEB","url":"https://github.com/python/cpython/issues/157190"},{"type":"WEB","url":"https://github.com/python/cpython/pull/157191"},{"type":"WEB","url":"https://mail.python.org/archives/list/security-announce@python.org/thread/EFJWGAZJA56AKSBR2WHMHQZO7RRLZPRH/"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-82049"}],"affected":[{"package":{"name":"python-min","ecosystem":"Bitnami","purl":"pkg:bitnami/python-min"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.14.0"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/python-min/BIT-python-min-2026-82049.json"},"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}],"schema_version":"1.9.0"}