{"cve":"CVE-2022-44900","nvd":{"published":"2022-12-06T20:15:10.560","modified":"2026-06-17T05:09:01.750","status":"Modified","description":"A directory traversal vulnerability in the SevenZipFile.extractall() function of the python library py7zr v0.20.0 and earlier allows attackers to write arbitrary files via extracting a crafted 7z file.","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:N","score":9.1},"cwes":["CWE-22"],"references":["http://packetstormsecurity.com/files/170127/py7zr-0.20.0-Directory-Traversal.html","https://github.com/miurahr/py7zr/commit/1bb43f17515c7f69673a1c88ab9cc72a7bbef406","https://lessonsec.com/cve/cve-2022-44900/","http://packetstormsecurity.com/files/170127/py7zr-0.20.0-Directory-Traversal.html","https://github.com/miurahr/py7zr/commit/1bb43f17515c7f69673a1c88ab9cc72a7bbef406"],"products":["py7zr_project:py7zr"],"source":"nvd","synced_at":"2026-10-19T21:37:28.463369388+00:00"},"epss":{"cve":"CVE-2022-44900","score":0.02465,"percentile":0.8448,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-m8xw-9x5x-6vh3","url":"https://osv.dev/vulnerability/GHSA-m8xw-9x5x-6vh3","summary":"py7zr directory traversal vulnerability","modified":"2024-10-18T22:22:41.281652Z","packages":[{"ecosystem":"PyPI","name":"py7zr","purl":"pkg:pypi/py7zr","ranges":["<0.20.1"],"fixed":["0.20.1"]}]},{"id":"PYSEC-2022-42998","url":"https://osv.dev/vulnerability/PYSEC-2022-42998","summary":"","modified":"2026-06-10T17:01:39.992769112Z","packages":[{"ecosystem":"PyPI","name":"py7zr","purl":"pkg:pypi/py7zr","ranges":["<0.20.1"],"fixed":["0.20.1"]}]}],"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."]}