{"cve":"CVE-2023-45853","nvd":{"published":"2023-10-14T02:15:09.323","modified":"2026-10-15T00:16:39.750","status":"Modified","description":"MiniZip in zlib through 1.3 has an integer overflow and resultant heap-based buffer overflow in zipOpenNewFileInZip4_64 via a long filename, comment, or extra field. NOTE: MiniZip is not a supported part of the zlib product. NOTE: pyminizip through 0.2.6 is also vulnerable because it bundles an affected zlib version, and exposes the applicable MiniZip code through its compress API.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-190"],"references":["http://www.openwall.com/lists/oss-security/2023/10/20/9","http://www.openwall.com/lists/oss-security/2024/01/24/10","https://chromium.googlesource.com/chromium/src/+/d709fb23806858847131027da95ef4c548813356","https://chromium.googlesource.com/chromium/src/+/de29dd6c7151d3cd37cb4cf0036800ddfb1d8b61","https://github.com/madler/zlib/blob/ac8f12c97d1afd9bafa9c710f827d40a407d3266/contrib/README.contrib#L1-L4"],"products":["smihica:pyminizip","zlib:zlib"],"source":"nvd","synced_at":"2026-10-19T21:39:34.467980132+00:00"},"epss":{"cve":"CVE-2023-45853","score":0.03448,"percentile":0.88919,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-mq29-j5xf-cjwr","url":"https://osv.dev/vulnerability/GHSA-mq29-j5xf-cjwr","summary":"pyminizip affected by zlib's integer overflow/heap based buffer overflow vulnerability due to vulnerable dependency","modified":"2026-09-10T03:50:03.958537210Z","packages":[{"ecosystem":"PyPI","name":"pyminizip","purl":"pkg:pypi/pyminizip","ranges":["<=0.2.6"],"fixed":[]}]},{"id":"PYSEC-2026-501","url":"https://osv.dev/vulnerability/PYSEC-2026-501","summary":"pyminizip affected by zlib's integer overflow/heap based buffer overflow vulnerability due to vulnerable dependency","modified":"2026-07-01T20:23:02.988949Z","packages":[{"ecosystem":"PyPI","name":"pyminizip","purl":"pkg:pypi/pyminizip","ranges":["<=0.2.6"],"fixed":[]}]}],"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."]}