{"id":"CVE-2026-39847","aliases":["EUVD-2026-19974","GHSA-pr46-2v3c-5356","PYSEC-2026-59"],"status":"published","title":"Emmett has a path traversal in internal assets handler","description":"Emmett is a full-stack Python web framework designed with simplicity. From 2.5.0 to before 2.8.1, the RSGI static handler for Emmett's internal assets (/__emmett__ paths) is vulnerable to path traversal attacks. An attacker can use ../ sequences (eg /__emmett__/../rsgi/handlers.py) to read arbitrary files outside the assets directory. This vulnerability is fixed in 2.8.1.","severity":{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00514,"percentile":0.4414,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-22"],"published":"2026-04-07T21:37:54Z","modified":"2026-10-28T02:30:37Z","fixes":[{"ecosystem":"PyPI","package":"emmett","fixed_in":["2.8.1"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"emmett","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.5.0"},{"fixed":"2.8.1"}]}]},{"source":"osv","ecosystem":"PyPI","package":"emmett","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.5.0"},{"fixed":"2.8.1"}]}],"versions":["2.5.0","2.5.1","2.5.10","2.5.11","2.5.12","2.5.13","2.5.2","2.5.3","2.5.4","2.5.5","2.5.6","2.5.7","2.5.8","2.5.9","2.6.0","2.6.1","2.6.2","2.6.3","2.7.0","2.7.1","2.8.0"]},{"source":"osv","ecosystem":"PyPI","package":"emmett","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.5.0"},{"fixed":"2.8.1"}]}],"versions":["2.5.0","2.5.1","2.5.10","2.5.11","2.5.12","2.5.13","2.5.2","2.5.3","2.5.4","2.5.5","2.5.6","2.5.7","2.5.8","2.5.9","2.6.0","2.6.1","2.6.2","2.6.3","2.7.0","2.7.1","2.8.0"]}],"products":[{"vendor":"emmett","product":"emmett"},{"vendor":"emmett-framework","product":"emmett"}],"references":[{"url":"https://github.com/emmett-framework/emmett/security/advisories/GHSA-pr46-2v3c-5356","tags":["x_refsource_CONFIRM","Vendor Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39847","tags":["advisory"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/emmett/PYSEC-2026-59.yaml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-pr46-2v3c-5356"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39847.json","tags":["advisory"]},{"url":"https://github.com/emmett-framework/emmett","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-39847","title":"Emmett has a path traversal in internal assets handler","description":"Emmett is a full-stack Python web framework designed with simplicity. From 2.5.0 to before 2.8.1, the RSGI static handler for Emmett's internal assets (/__emmett__ paths) is vulnerable to path traversal attacks. An attacker can use ../ sequences (eg /__emmett__/../rsgi/handlers.py) to read arbitrary files outside the assets directory. This vulnerability is fixed in 2.8.1.","status":"published","published":"2026-04-07T21:37:54.76Z","modified":"2026-04-08T15:35:40.853Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:20:02.662847Z"}],"euvd":[{"id":"EUVD-2026-19974","description":"Emmett is a full-stack Python web framework designed with simplicity. From 2.5.0 to before 2.8.1, the RSGI static handler for Emmett's internal assets (/__emmett__ paths) is vulnerable to path traversal attacks. An attacker can use ../ sequences (eg /__emmett__/../rsgi/handlers.py) to read arbitrary files outside the assets directory. This vulnerability is fixed in 2.8.1.","status":"published","published":"2026-04-07T21:37:54Z","modified":"2026-04-08T15:35:40Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical"}],"updated_at":"2026-11-02T19:25:12.037386Z"}],"ghsa":[{"id":"GHSA-pr46-2v3c-5356","title":"Emmett has a path traversal in internal assets handler","description":"The RSGI static handler for Emmett's internal assets (`/__emmett__` paths) is vulnerable to path traversal attacks.\n\nAn attacker can use `../` sequences (eg `/__emmett__/../rsgi/handlers.py`) to read arbitrary files outside the assets directory.","status":"published","published":"2026-04-08T00:18:46Z","modified":"2026-06-06T00:26:39Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:40:17.745826Z"}],"nvd":[{"id":"CVE-2026-39847","description":"Emmett is a full-stack Python web framework designed with simplicity. From 2.5.0 to before 2.8.1, the RSGI static handler for Emmett's internal assets (/__emmett__ paths) is vulnerable to path traversal attacks. An attacker can use ../ sequences (eg /__emmett__/../rsgi/handlers.py) to read arbitrary files outside the assets directory. This vulnerability is fixed in 2.8.1.","status":"published","published":"2026-04-07T22:16:23.793Z","modified":"2026-07-24T21:10:00.143Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T14:12:13.535987Z"}],"osv":[{"id":"CVE-2026-39847","title":"Emmett has a path traversal in internal assets handler","description":"Emmett is a full-stack Python web framework designed with simplicity. From 2.5.0 to before 2.8.1, the RSGI static handler for Emmett's internal assets (/__emmett__ paths) is vulnerable to path traversal attacks. An attacker can use ../ sequences (eg /__emmett__/../rsgi/handlers.py) to read arbitrary files outside the assets directory. This vulnerability is fixed in 2.8.1.","status":"published","published":"2026-04-07T21:37:54.76Z","modified":"2026-10-28T02:30:37.714919843Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","level":"critical"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:45:03.040464Z"},{"id":"GHSA-pr46-2v3c-5356","title":"Emmett has a path traversal in internal assets handler","description":"The RSGI static handler for Emmett's internal assets (`/__emmett__` paths) is vulnerable to path traversal attacks.\n\nAn attacker can use `../` sequences (eg `/__emmett__/../rsgi/handlers.py`) to read arbitrary files outside the assets directory.","status":"published","published":"2026-04-08T00:18:46Z","modified":"2026-06-06T00:30:08.754262586Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:46:53.700556Z"},{"id":"PYSEC-2026-59","description":"Emmett is a full-stack Python web framework designed with simplicity. From 2.5.0 to before 2.8.1, the RSGI static handler for Emmett's internal assets (/__emmett__ paths) is vulnerable to path traversal attacks. An attacker can use ../ sequences (eg /__emmett__/../rsgi/handlers.py) to read arbitrary files outside the assets directory. This vulnerability is fixed in 2.8.1.","status":"published","published":"2026-04-07T22:16:23.793Z","modified":"2026-05-20T09:18:59.901003Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:52:57.671918Z"}]}}