{"id":"CVE-2026-2297","title":"The import hook in CPython that handles legacy *.pyc files (SourcelessFileLoader) is incorrectly handled in FileLoader (a base class) and so does not use io.open_code() to read the .pyc files","summary":"The import hook in CPython that handles legacy *.pyc files (SourcelessFileLoader) is incorrectly handled in FileLoader (a base class) and so does not use io.open_code() to read the .pyc files. sys.audit handlers for this audit event ther…","severity":"none","cwe":["CWE-668"],"published":"2026-03-04","updated":"2026-08-05","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-2297","references":[{"url":"https://github.com/python/cpython/commit/482d6f8bdba9da3725d272e8bb4a2d25fb6a603e","label":"cna@python.org"},{"url":"https://github.com/python/cpython/commit/69ddd9bb2cc4bd69b1565647c18659c6a789ccd9","label":"cna@python.org"},{"url":"https://github.com/python/cpython/commit/876858c9f65d9ab656c7fa639f268ce7856d89dd","label":"cna@python.org"},{"url":"https://github.com/python/cpython/commit/a51b1b512de1d56b3714b65628a2eae2b07e535e","label":"cna@python.org"},{"url":"https://github.com/python/cpython/commit/c70adad78caeeea33f92f560ecb93331ca11bf66","label":"cna@python.org"},{"url":"https://github.com/python/cpython/commit/e58e9802b9bec5cdbf48fc9bf1da5f4fda482e86","label":"cna@python.org"},{"url":"https://github.com/python/cpython/issues/145506","label":"cna@python.org"},{"url":"https://github.com/python/cpython/pull/145507","label":"cna@python.org"},{"url":"http://www.openwall.com/lists/oss-security/2026/03/05/6","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00212,"epssPercentile":0.11755,"ingestedAt":"2026-08-05T11:47:23.818Z","slug":"CVE-2026-2297","body":"## Overview\n\nThe import hook in CPython that handles legacy *.pyc files (SourcelessFileLoader) is incorrectly handled in FileLoader (a base class) and so does not use io.open_code() to read the .pyc files. sys.audit handlers for this audit event therefore do not fire.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}