{"id":"CVE-2026-5271","aliases":["EUVD-2026-17911","GHSA-jr5x-hgm4-rrm6"],"status":"published","title":"Possible to hijack modules in current working directory","description":"pymanager included the current working directory in sys.path meaning modules could be shadowed by modules in the current working directory. As a result, if a user executes a pymanager-generated command (e.g., pip, pytest)\n from an attacker-controlled directory, a malicious module in that \ndirectory can be imported and executed instead of the intended package.","severity":{"version":"4.0","score":5.6,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0018,"percentile":0.07593,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-427"],"published":"2026-04-01T13:48:07Z","modified":"2026-10-28T02:30:55Z","products":[{"vendor":"python","product":"pymanager"},{"vendor":"python software foundation","product":"pymanager"}],"references":[{"url":"https://github.com/python/pymanager/security/advisories/GHSA-jr5x-hgm4-rrm6","tags":["vendor-advisory","exploit","Exploit","Vendor Advisory","advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2026/04/01/5","tags":["Mailing List","Third Party Advisory","web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5271.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-5271","tags":["advisory"]},{"url":"https://github.com/python/pymanager","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-5271","title":"Possible to hijack modules in current working directory","description":"pymanager included the current working directory in sys.path meaning modules could be shadowed by modules in the current working directory. As a result, if a user executes a pymanager-generated command (e.g., pip, pytest)\n from an attacker-controlled directory, a malicious module in that \ndirectory can be imported and executed instead of the intended package.","status":"published","published":"2026-04-01T13:48:07.534Z","modified":"2026-04-01T23:12:18.741Z","cvss":[{"version":"4.0","score":5.6,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-427"],"updated_at":"2026-11-02T13:39:27.849196Z"}],"euvd":[{"id":"EUVD-2026-17911","description":"pymanager included the current working directory in sys.path meaning modules could be shadowed by modules in the current working directory. As a result, if a user executes a pymanager-generated command (e.g., pip, pytest)\n from an attacker-controlled directory, a malicious module in that \ndirectory can be imported and executed instead of the intended package.","status":"published","published":"2026-04-01T13:48:07Z","modified":"2026-04-01T23:12:18Z","cvss":[{"version":"4.0","score":5.6,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T19:25:23.620594Z"}],"nvd":[{"id":"CVE-2026-5271","description":"pymanager included the current working directory in sys.path meaning modules could be shadowed by modules in the current working directory. As a result, if a user executes a pymanager-generated command (e.g., pip, pytest)\n from an attacker-controlled directory, a malicious module in that \ndirectory can be imported and executed instead of the intended package.","status":"published","published":"2026-04-01T14:16:59.343Z","modified":"2026-10-26T21:10:00.17Z","cvss":[{"version":"4.0","score":5.6,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-427"],"updated_at":"2026-11-02T14:12:12.73929Z"}],"osv":[{"id":"CVE-2026-5271","title":"Possible to hijack modules in current working directory","description":"pymanager included the current working directory in sys.path meaning modules could be shadowed by modules in the current working directory. As a result, if a user executes a pymanager-generated command (e.g., pip, pytest)\n from an attacker-controlled directory, a malicious module in that \ndirectory can be imported and executed instead of the intended package.","status":"published","published":"2026-04-01T13:48:07.534Z","modified":"2026-10-28T02:30:55.53915701Z","cvss":[{"version":"4.0","score":5.6,"vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"updated_at":"2026-11-02T15:45:07.431113Z"}]}}