{"id":"BIT-python-min-2026-7774","summary":"tarfile.data_filter path traversal bypass allows writing outside the extraction directory","details":"tarfile.data_filter could be bypassed using crafted link entries, including symlinks with empty or directory-like names, to redirect later archive members outside the intended extraction directory. This allowed a malicious tar archive to cause tarfile.extractall() to write files outside the destination directory, subject to the permissions of the extracting process.","aliases":["BIT-libpython-2026-7774","BIT-python-2026-7774","CVE-2026-7774","PSF-2026-26"],"modified":"2026-06-18T10:30:06.153033566Z","published":"2026-06-08T08:13:38.988Z","database_specific":{"severity":"Medium","cpes":["cpe:2.3:a:python:python:*:*:*:*:*:*:*:*"]},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/06/04/9"},{"type":"WEB","url":"https://github.com/python/cpython/issues/149486"},{"type":"WEB","url":"https://github.com/python/cpython/pull/149487"},{"type":"WEB","url":"https://mail.python.org/archives/list/security-announce@python.org/thread/4FU62L2M6RMMHT2QPGQNPEHHUND7CEX5/"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-7774"},{"type":"WEB","url":"https://github.com/python/cpython/commit/0478bd83d82b255e0f29f613367a59d261e7eaa2"},{"type":"WEB","url":"https://github.com/python/cpython/commit/0d28f5e46e151718972dfabd91205444d0037b6d"},{"type":"WEB","url":"https://github.com/python/cpython/commit/578411982c16f753f4893532510099ef665117da"},{"type":"WEB","url":"https://github.com/python/cpython/commit/5cf47a248c35c375d610b87b2f72fd1ed454b558"},{"type":"WEB","url":"https://github.com/python/cpython/commit/74cca9a92fb7d653e404843a56b8bdc7b0afdbbf"}],"affected":[{"package":{"name":"python-min","ecosystem":"Bitnami","purl":"pkg:bitnami/python-min"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"3.13.14"},{"introduced":"3.14.0"},{"fixed":"3.14.6"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/python-min/BIT-python-min-2026-7774.json"},"severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/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":"1.7.5"}