{"id":"CVE-2024-27456","aliases":["EUVD-2024-0551","GHSA-785g-282q-pwvx"],"status":"published","title":"Rack CORS Middleware has Insecure File Permissions","description":"rack-cors (aka Rack CORS Middleware) 2.0.1 has 0666 permissions for the .rb files.","severity":{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-12","score":0.00771,"percentile":0.56146,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-200"],"published":"2024-02-26T00:00:00Z","modified":"2026-10-28T02:30:49Z","fixes":[{"ecosystem":"RubyGems","package":"rack-cors","fixed_in":["2.0.2"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"RubyGems","package":"rack-cors","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.1"},{"last_affected":"2.0.1"},{"fixed":"2.0.2"}]}],"versions":["2.0.1"]},{"source":"osv","ecosystem":"RubyGems","package":"rack-cors","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.1"},{"fixed":"2.0.2"}]}],"versions":["2.0.1"]}],"products":[{"vendor":"rack-cors_project","product":"rack-cors"},{"vendor":"rylabs","product":"rack_cors_middleware"}],"references":[{"url":"https://github.com/cyu/rack-cors/issues/274","tags":["x_transferred","Exploit","Issue Tracking","Patch","Third Party Advisory","report","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-27456","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-785g-282q-pwvx","tags":["advisory"]},{"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack-cors/CVE-2024-27456.yml","tags":["web"]},{"url":"https://github.com/cyu/rack-cors/blob/878063987bd1ca956282dda95697fd821bf24d2e/CHANGELOG.md#changed","tags":["web"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/27xxx/CVE-2024-27456.json","tags":["advisory"]},{"url":"https://github.com/cyu/rack-cors","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2024-27456","description":"rack-cors (aka Rack CORS Middleware) 2.0.1 has 0666 permissions for the .rb files.","status":"published","published":"2024-02-26T00:00:00Z","modified":"2024-08-02T18:54:36.787Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"adp"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:34:12.982241Z"}],"euvd":[{"id":"EUVD-2024-0551","description":"rack-cors (aka Rack CORS Middleware) 2.0.1 has 0666 permissions for the .rb files.","status":"published","published":"2024-02-26T00:00:00Z","modified":"2024-08-02T18:54:36Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-03T03:50:01.590469Z"}],"ghsa":[{"id":"GHSA-785g-282q-pwvx","title":"Rack CORS Middleware has Insecure File Permissions","description":"rack-cors (aka Rack CORS Middleware) 2.0.1 has 0666 permissions for the .rb files.","status":"published","published":"2024-02-26T18:30:31Z","modified":"2024-03-04T18:51:52Z","updated_at":"2026-11-02T14:37:39.730152Z"}],"nvd":[{"id":"CVE-2024-27456","description":"rack-cors (aka Rack CORS Middleware) 2.0.1 has 0666 permissions for the .rb files.","status":"published","published":"2024-02-26T16:28:00.76Z","modified":"2026-06-17T07:19:55.75Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"secondary"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:09:38.473056Z"}],"osv":[{"id":"CVE-2024-27456","description":"rack-cors (aka Rack CORS Middleware) 2.0.1 has 0666 permissions for the .rb files.","status":"published","published":"2024-02-26T00:00:00Z","modified":"2026-10-28T02:30:49.856370307Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-02T15:44:39.569658Z"},{"id":"GHSA-785g-282q-pwvx","title":"Rack CORS Middleware has Insecure File Permissions","description":"rack-cors (aka Rack CORS Middleware) 2.0.1 has 0666 permissions for the .rb files.","status":"published","published":"2024-02-26T18:30:31Z","modified":"2024-03-04T18:51:48Z","updated_at":"2026-11-02T15:46:40.657155Z"}]}}