{"cve":"CVE-2019-19275","nvd":{"published":"2019-11-26T15:15:12.847","modified":"2026-06-17T02:26:24.930","status":"Modified","description":"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.)","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-125"],"references":["https://bugs.python.org/issue36495","https://github.com/python/cpython/commit/a4d78362397fc3bced6ea80fbc7b5f4827aec55e","https://github.com/python/cpython/commit/dcfcd146f8e6fc5c2fc16a4c192a0c5f5ca8c53c","https://github.com/python/typed_ast/commit/156afcb26c198e162504a57caddfe0acd9ed7dce","https://github.com/python/typed_ast/commit/dc317ac9cff859aa84eeabe03fb5004982545b3b"],"products":["python:typed_ast"],"source":"nvd","synced_at":"2026-10-19T20:59:27.069234358+00:00"},"epss":{"cve":"CVE-2019-19275","score":0.03283,"percentile":0.88454,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-7xxv-wpxj-mx5v","url":"https://osv.dev/vulnerability/GHSA-7xxv-wpxj-mx5v","summary":"typed-ast Out-of-bounds Read","modified":"2024-11-18T22:26:16.933055Z","packages":[{"ecosystem":"PyPI","name":"typed-ast","purl":"pkg:pypi/typed-ast","ranges":[">=1.3.0 <1.3.2"],"fixed":["1.3.2"]}]},{"id":"PYSEC-2019-131","url":"https://osv.dev/vulnerability/PYSEC-2019-131","summary":"","modified":"2023-11-08T04:01:28.229049Z","packages":[{"ecosystem":"PyPI","name":"typed-ast","purl":"pkg:pypi/typed-ast","ranges":["<1.3.2"],"fixed":["1.3.2"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}