{"schema":"threatline.record/2","record":{"id":"CVE-2026-114583","aliases":[],"summary":"tar filter allows writing outside destination via empty-named symlink","details":"tarfile.tar_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() with filter=\"tar\" to write files outside the destination directory, subject to the permissions of the extracting process.\n\nThis is the tarfile.tar_filter counterpart of CVE-2026-7774, which covered tarfile.data_filter.","categories":["Runtimes & languages"],"product":"CPython","vendor":"Python Software Foundation","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-114583","source_modified_at":"2026-10-23T00:36:58.472Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"CPython","vendor":"Python Software Foundation","versions":[{"lessThan":"3.16.0","status":"affected","version":"0","versionType":"python"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-114583","source_modified_at":"2026-10-23T00:36:58.472Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"CPython","ecosystem":null},"version":"3.16.0","basis":"first unaffected version stated in the CVE record"}],"cvss":6.9,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00207,"percentile":0.10254,"score_date":"2026-10-23"},"published_at":"2026-10-22T20:57:36.019Z","modified_at":"2026-10-23T00:36:58.472Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-114583","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T00:36:58.472Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-114583","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/python/cpython/pull/160098","tags":["patch"]},{"source":"CVE List","url":"https://github.com/python/cpython/issues/160097","tags":["issue-tracking"]},{"source":"CVE List","url":"https://mail.python.org/archives/list/security-announce@python.org/thread/43JOWPRAV5DI3VZ4FUEUAZOHCATXXOCK/"},{"source":"CVE List","url":"https://github.com/python/cpython/commit/0901ad4ffb22605f12b705d1c1197f0a01f0ba0b","tags":["patch"]},{"source":"CVE List","url":"https://github.com/python/cpython/commit/c6ada40177436e4e2533a7b252082b5f0c043477","tags":["patch"]},{"source":"CVE List","url":"https://github.com/python/cpython/commit/e7e0b3523ad6ba8472873dda594cf4021a16f8b5","tags":["patch"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"vendor and product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-23T00:36:58.472Z","content_hash":"2607ec55884c18f3b80436b7887dac5fd0d70d09a6e4fe17a5be2b7f07301f60"}}