{"id":"CVE-2020-13388","aliases":["EUVD-2020-0094","GHSA-h72c-w3q3-55qq","PYSEC-2020-341"],"status":"published","title":"OS Command Injection in jw.util","description":"An exploitable vulnerability exists in the configuration-loading functionality of the jw.util package before 2.3 for Python. When loading a configuration with FromString or FromStream with YAML, one can execute arbitrary Python code, resulting in OS command execution, because safe_load is not used.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.04533,"percentile":0.91633,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-78"],"published":"2020-05-22T16:07:19Z","modified":"2026-06-17T02:53:03Z","fixes":[{"ecosystem":"PyPI","package":"jw-util","fixed_in":["2.3"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"jw-util","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3"}]}]},{"source":"osv","ecosystem":"PyPI","package":"jw-util","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3"}]}],"versions":["-class.-jw.util.version.Version-","1.0a","1.0dev1","1.3.4","1.3.5","1.3.6","1.3.7","1.4","1.4.1","1.4.2","1.5.1","1.5.2","1.5.3","1.5.4","1.5.5","1.5a0","1.5a1","1.5a2","1.5a3","1.5a4","1.5b0","1.6","1.7","1.8","1.9","1.9.1","1.9.2","2","2.0","2.0.1","2.0a0","2.0a1","2.0a2","2.0a3","2.0b0","2.1","2.2"]},{"source":"osv","ecosystem":"PyPI","package":"jw-util","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.3"}]}],"versions":["-class.-jw.util.version.Version-","1.0a","1.0dev1","1.3.4","1.3.5","1.3.6","1.3.7","1.4","1.4.1","1.4.2","1.5.1","1.5.2","1.5.3","1.5.4","1.5.5","1.5a0","1.5a1","1.5a2","1.5a3","1.5a4","1.5b0","1.6","1.7","1.8","1.9","1.9.1","1.9.2","2","2.0","2.0.1","2.0a0","2.0a1","2.0a2","2.0a3","2.0b0","2.1","2.2"]}],"products":[{"vendor":"python","product":"jw.util"}],"references":[{"url":"https://joel-malwarebenchmark.github.io","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","web"]},{"url":"https://joel-malwarebenchmark.github.io/blog/2020/04/27/cve-2020-13388-jw-util-vulnerability/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","article"]},{"url":"https://security.netapp.com/advisory/ntap-20200528-0002/","tags":["x_refsource_CONFIRM","x_transferred","Third Party Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-13388","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-h72c-w3q3-55qq","tags":["advisory"]},{"url":"https://joel-malwarebenchmark.github.io/blog/2020/04/27/cve-2020-13388-jw-util-vulnerability","tags":["web"]},{"url":"https://security.netapp.com/advisory/ntap-20200528-0002","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2020-13388","description":"An exploitable vulnerability exists in the configuration-loading functionality of the jw.util package before 2.3 for Python. When loading a configuration with FromString or FromStream with YAML, one can execute arbitrary Python code, resulting in OS command execution, because safe_load is not used.","status":"published","published":"2020-05-22T16:07:19Z","modified":"2024-08-04T12:18:17.81Z","updated_at":"2026-11-02T14:35:54.170199Z"}],"euvd":[{"id":"EUVD-2020-0094","description":"An exploitable vulnerability exists in the configuration-loading functionality of the jw.util package before 2.3 for Python. When loading a configuration with FromString or FromStream with YAML, one can execute arbitrary Python code, resulting in OS command execution, because safe_load is not used.","status":"published","published":"2020-05-22T16:07:19Z","modified":"2024-08-04T12:18:17Z","updated_at":"2026-11-03T03:07:38.311662Z"}],"ghsa":[{"id":"GHSA-h72c-w3q3-55qq","title":"OS Command Injection in jw.util","description":"An exploitable vulnerability exists in the configuration-loading functionality of the jw.util package before 2.3 for Python. When loading a configuration with FromString or FromStream with YAML, one can execute arbitrary Python code, resulting in OS command execution, because safe_load is not used.","status":"published","published":"2021-06-02T21:45:12Z","modified":"2023-03-03T23:20:30Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:36:47.279442Z"}],"nvd":[{"id":"CVE-2020-13388","description":"An exploitable vulnerability exists in the configuration-loading functionality of the jw.util package before 2.3 for Python. When loading a configuration with FromString or FromStream with YAML, one can execute arbitrary Python code, resulting in OS command execution, because safe_load is not used.","status":"published","published":"2020-05-22T17:15:10.957Z","modified":"2026-06-17T02:53:03.797Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":7.5,"vector":"AV:N/AC:L/Au:N/C:P/I:P/A:P","level":"high","assessor":"primary"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T14:06:04.922138Z"}],"osv":[{"id":"GHSA-h72c-w3q3-55qq","title":"OS Command Injection in jw.util","description":"An exploitable vulnerability exists in the configuration-loading functionality of the jw.util package before 2.3 for Python. When loading a configuration with FromString or FromStream with YAML, one can execute arbitrary Python code, resulting in OS command execution, because safe_load is not used.","status":"published","published":"2021-06-02T21:45:12Z","modified":"2024-02-16T08:18:06.025087Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-78"],"updated_at":"2026-11-02T15:46:48.920784Z"},{"id":"PYSEC-2020-341","description":"An exploitable vulnerability exists in the configuration-loading functionality of the jw.util package before 2.3 for Python. When loading a configuration with FromString or FromStream with YAML, one can execute arbitrary Python code, resulting in OS command execution, because safe_load is not used.","status":"published","published":"2020-05-22T17:15:00Z","modified":"2023-11-08T04:02:19.226419Z","updated_at":"2026-11-02T15:52:52.682031Z"}]}}