{"cve":"CVE-2026-8328","nvd":{"published":"2026-05-13T21:16:50.167","modified":"2026-10-26T14:10:00.130","status":"Awaiting Analysis","description":"The ftpcp() function in Lib/ftplib.py was not updated when \nCVE-2021-4189 was fixed. While makepasv() was patched to replace \nserver-supplied PASV host addresses with the actual peer address \n(getpeername()[0]), ftpcp() still calls parse227() directly and passes \nthe raw attacker-controllable IP address and port to target.sendport(). This patch is related to CVE-2021-4189.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","score":5.9},"cvss_v3":null,"cwes":["CWE-918"],"references":["https://github.com/python/cpython/commit/2bbcf3fb7a420a05605576c0f9468d4675381b5f","https://github.com/python/cpython/commit/5dadc64673ce875ebfb24163907777dae0f6ca06","https://github.com/python/cpython/commit/7d95a1dc7382b55cba7fdd6a110336077584a4f0","https://github.com/python/cpython/commit/bb3446dda6c49b32e67c11dbbbf221b40be00763","https://github.com/python/cpython/commit/c88704431ea3248ca769384c13856330976fac1d"],"products":[],"source":"nvd","synced_at":"2026-10-26T14:27:29.784594657+00:00"},"epss":{"cve":"CVE-2026-8328","score":0.00457,"percentile":0.3941,"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."]}