{"cve":"CVE-2025-8291","nvd":{"published":"2025-10-07T18:16:00.317","modified":"2026-10-08T22:10:00.563","status":"Deferred","description":"The 'zipfile' module would not check the validity of the ZIP64 End of\nCentral Directory (EOCD) Locator record offset value would not be used to\nlocate the ZIP64 EOCD record, instead the ZIP64 EOCD record would be\nassumed to be the previous record in the ZIP archive. This could be abused\nto create ZIP archives that are handled differently by the 'zipfile' module\ncompared to other ZIP implementations.\n\n\nRemediation maintains this behavior, but checks that the offset specified\nin the ZIP64 EOCD Locator record matches the expected value.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","score":4.3},"cwes":["CWE-1285"],"references":["https://github.com/python/cpython/commit/162997bb70e067668c039700141770687bc8f267","https://github.com/python/cpython/commit/1d29afb0d6218aa8fb5e1e4a6133a4778d89bb46","https://github.com/python/cpython/commit/333d4a6f4967d3ace91492a39ededbcf3faa76a6","https://github.com/python/cpython/commit/76437ac248ad8ca44e9bf697b02b1e2241df2196","https://github.com/python/cpython/commit/8392b2f0d35678407d9ce7d95655a5b77de161b4"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:11:26.888974865+00:00"},"epss":{"cve":"CVE-2025-8291","score":0.00466,"percentile":0.40093,"date":"2026-10-25"},"kev":null,"osv":[],"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."]}