{"id":"CVE-2019-19275","aliases":["GHSA-7xxv-wpxj-mx5v","PYSEC-2019-131"],"url":"https://o3.security/vulnerability/CVE-2019-19275","summary":"typed-ast Out-of-bounds Read","details":"typed_ast 1.3.0 and 1.3.1 has an ast_for_arguments out-of-bounds read. An attacker with the ability to cause a Python interpreter to parse Python source (but not necessarily execute it) may be able to crash the interpreter process. This could be a concern, for example, in a web-based service that parses (but does not execute) Python code. (This issue also affected certain Python 3.8.0-alpha prereleases.)","published":"2019-11-26T15:15:12.847Z","modified":"2026-07-08T16:27:47.675384Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"PyPI","name":"typed-ast","fixedVersion":"1.3.2"}],"fix":{"url":"https://github.com/python/cpython/commit/a4d78362397fc3bced6ea80fbc7b5f4827aec55e","label":"python/cpython@a4d7836"},"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LG5H4Q6LFVRX7SFXLBEJMNQFI4T5SCEA/"},{"type":"FIX","url":"https://bugs.python.org/issue36495"},{"type":"FIX","url":"https://github.com/python/cpython/commit/a4d78362397fc3bced6ea80fbc7b5f4827aec55e"},{"type":"FIX","url":"https://github.com/python/cpython/commit/dcfcd146f8e6fc5c2fc16a4c192a0c5f5ca8c53c"},{"type":"FIX","url":"https://github.com/python/typed_ast/commit/156afcb26c198e162504a57caddfe0acd9ed7dce"},{"type":"FIX","url":"https://github.com/python/typed_ast/commit/dc317ac9cff859aa84eeabe03fb5004982545b3b"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T16:27:47.675384Z"}}