{"id":"CVE-2019-15149","aliases":["EUVD-2019-0086","GHSA-8rf6-w2mx-4xjh","PYSEC-2019-104"],"status":"disputed","title":"Undirectional routing wasn't respected in some cases in Mitogen","description":"core.py in Mitogen before 0.2.8 has a typo that drops the unidirectional-routing protection mechanism in the case of a child that is initiated by another child. The Ansible extension is unaffected. NOTE: the vendor disputes this issue because it is exploitable only in conjunction with hypothetical other factors, i.e., an affected use case within a library caller, and a bug in the message receiver policy code that led to reliance on this extra protection mechanism","severity":{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01646,"percentile":0.76613,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-254"],"published":"2019-08-18T19:56:18Z","modified":"2026-10-20T10:52:43Z","fixes":[{"ecosystem":"PyPI","package":"mitogen","fixed_in":["0.2.8"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"PyPI","package":"mitogen","ranges":[{"type":"GIT","events":[{"introduced":"0"},{"fixed":"5924af1566763e48c42028399ea0cd95c457b3dc"}]},{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.2.8"}]}],"versions":["0.2.0","0.2.1","0.2.2","0.2.3","0.2.4","0.2.5","0.2.6","0.2.7"]}],"products":[{"vendor":"networkgenomics","product":"mitogen"}],"references":[{"url":"https://github.com/dw/mitogen/commit/5924af1566763e48c42028399ea0cd95c457b3dc","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://mitogen.networkgenomics.com/changelog.html#v0-2-8-2019-08-18","tags":["x_refsource_MISC","x_transferred","Release Notes","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-15149","tags":["advisory"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/mitogen/PYSEC-2019-104.yaml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-8rf6-w2mx-4xjh","tags":["advisory"]},{"url":"https://github.com/dw/mitogen","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2019-15149","description":"core.py in Mitogen before 0.2.8 has a typo that drops the unidirectional-routing protection mechanism in the case of a child that is initiated by another child. The Ansible extension is unaffected. NOTE: the vendor disputes this issue because it is exploitable only in conjunction with hypothetical other factors, i.e., an affected use case within a library caller, and a bug in the message receiver policy code that led to reliance on this extra protection mechanism","status":"disputed","published":"2019-08-18T19:56:18Z","modified":"2024-08-05T00:42:03.692Z","updated_at":"2026-11-02T14:20:21.397307Z"}],"euvd":[{"id":"EUVD-2019-0086","description":"core.py in Mitogen before 0.2.8 has a typo that drops the unidirectional-routing protection mechanism in the case of a child that is initiated by another child. The Ansible extension is unaffected. NOTE: the vendor disputes this issue because it is exploitable only in conjunction with hypothetical other factors, i.e., an affected use case within a library caller, and a bug in the message receiver policy code that led to reliance on this extra protection mechanism","status":"published","published":"2019-08-18T19:56:18Z","modified":"2024-08-05T00:42:03Z","updated_at":"2026-11-03T02:40:37.184704Z"}],"ghsa":[{"id":"GHSA-8rf6-w2mx-4xjh","title":"Undirectional routing wasn't respected in some cases in Mitogen","description":"core.py in Mitogen before 0.2.8 has a typo that drops the unidirectional-routing protection mechanism in the case of a child that is initiated by another child. The Ansible extension is unaffected. NOTE: the vendor disputes this issue because it is exploitable only in conjunction with hypothetical other factors, i.e., an affected use case within a library caller, and a bug in the message receiver policy code that led to reliance on this extra protection mechanism.","status":"withdrawn","published":"2019-08-19T23:45:47Z","modified":"2024-09-25T17:36:44Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical"},{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T14:38:06.29677Z"}],"nvd":[{"id":"CVE-2019-15149","description":"core.py in Mitogen before 0.2.8 has a typo that drops the unidirectional-routing protection mechanism in the case of a child that is initiated by another child. The Ansible extension is unaffected. NOTE: the vendor disputes this issue because it is exploitable only in conjunction with hypothetical other factors, i.e., an affected use case within a library caller, and a bug in the message receiver policy code that led to reliance on this extra protection mechanism","status":"disputed","published":"2019-08-18T20:15:09.22Z","modified":"2026-06-17T02:19:48.607Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"primary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-254"],"updated_at":"2026-11-02T14:05:22.878504Z"}],"osv":[{"id":"CVE-2019-15149","description":"core.py in Mitogen before 0.2.8 has a typo that drops the unidirectional-routing protection mechanism in the case of a child that is initiated by another child. The Ansible extension is unaffected. NOTE: the vendor disputes this issue because it is exploitable only in conjunction with hypothetical other factors, i.e., an affected use case within a library caller, and a bug in the message receiver policy code that led to reliance on this extra protection mechanism","status":"published","published":"2019-08-18T20:15:09.22Z","modified":"2026-10-20T10:52:43.702263578Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:11.361782Z"},{"id":"GHSA-8rf6-w2mx-4xjh","title":"Undirectional routing wasn't respected in some cases in Mitogen","description":"core.py in Mitogen before 0.2.8 has a typo that drops the unidirectional-routing protection mechanism in the case of a child that is initiated by another child. The Ansible extension is unaffected. NOTE: the vendor disputes this issue because it is exploitable only in conjunction with hypothetical other factors, i.e., an affected use case within a library caller, and a bug in the message receiver policy code that led to reliance on this extra protection mechanism.","status":"withdrawn","published":"2019-08-19T23:45:47Z","modified":"2024-12-05T05:43:17.398833Z","cvss":[{"version":"3.0","score":9.8,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"},{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical"}],"updated_at":"2026-11-02T15:46:42.78452Z"},{"id":"PYSEC-2019-104","description":"** DISPUTED ** core.py in Mitogen before 0.2.8 has a typo that drops the unidirectional-routing protection mechanism in the case of a child that is initiated by another child. The Ansible extension is unaffected. NOTE: the vendor disputes this issue because it is exploitable only in conjunction with hypothetical other factors, i.e., an affected use case within a library caller, and a bug in the message receiver policy code that led to reliance on this extra protection mechanism.","status":"published","published":"2019-08-18T20:15:00Z","modified":"2023-11-08T04:01:12.761712Z","updated_at":"2026-11-02T15:52:52.192131Z"}]}}