{"id":"CVE-2024-29034","aliases":["EUVD-2024-1016","GHSA-vfmv-jfc5-pjjw"],"status":"published","title":"CarrierWave's Content-Type allowlist bypass vulnerability which possibly leads to XSS remained","description":"CarrierWave is a solution for file uploads for Rails, Sinatra and other Ruby web frameworks. The vulnerability CVE-2023-49090 wasn't fully addressed. This vulnerability is caused by the fact that when uploading to object storage, including Amazon S3, it is possible to set a Content-Type value that is interpreted by browsers to be different from what's allowed by `content_type_allowlist`, by providing multiple values separated by commas. This bypassed value can be used to cause XSS. Upgrade to 3.0.7 or 2.2.6.","severity":{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0044,"percentile":0.38588,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-436","CWE-79"],"published":"2024-03-24T19:27:35Z","modified":"2026-10-28T02:31:07Z","fixes":[{"ecosystem":"RubyGems","package":"carrierwave","fixed_in":["3.0.7","2.2.6"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"RubyGems","package":"carrierwave","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0"},{"fixed":"3.0.7"}]}]},{"source":"ghsa","ecosystem":"RubyGems","package":"carrierwave","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.6"}]}]},{"source":"osv","ecosystem":"RubyGems","package":"carrierwave","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0"},{"fixed":"3.0.7"}]}],"versions":["3.0.0","3.0.1","3.0.2","3.0.3","3.0.4","3.0.5","3.0.6"]},{"source":"osv","ecosystem":"RubyGems","package":"carrierwave","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.6"}]}],"versions":["0.1","0.10.0","0.11.0","0.11.1","0.11.2","0.2.0","0.2.1","0.2.3","0.2.4","0.3.0","0.3.1","0.3.2","0.3.3","0.3.4","0.3.5","0.3.5.1","0.3.5.2","0.4.0","0.4.1","0.4.10","0.4.2","0.4.3","0.4.4","0.4.5","0.4.6","0.4.7","0.4.8","0.4.9","0.5.0","0.5.0.beta2","0.5.1","0.5.2","0.5.3","0.5.4","0.5.5","0.5.6","0.5.7","0.5.8","0.6.0","0.6.1","0.6.2","0.7.0","0.7.1","0.8.0","0.9.0","1.0.0","1.0.0.beta","1.0.0.rc","1.1.0","1.2.0","1.2.1","1.2.2","1.2.3","1.3.0","1.3.1","1.3.2","1.3.3","1.3.4","2.0.0","2.0.0.rc","2.0.1","2.0.2","2.1.0","2.1.1","2.2.0","2.2.1","2.2.2","2.2.3","2.2.4","2.2.5"]}],"products":[{"vendor":"carrierwave_project","product":"carrierwave"},{"vendor":"carrierwaveuploader","product":"carrierwave"}],"references":[{"url":"https://github.com/carrierwaveuploader/carrierwave/security/advisories/GHSA-vfmv-jfc5-pjjw","tags":["x_refsource_CONFIRM","x_transferred","Patch","Third Party Advisory","advisory","web"]},{"url":"https://github.com/carrierwaveuploader/carrierwave/commit/25b1c800d45ef8e78dc445ebe3bd8a6e3f0a3477","tags":["x_refsource_MISC","x_transferred","Patch","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-29034","tags":["advisory"]},{"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/carrierwave/CVE-2024-29034.yml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-vfmv-jfc5-pjjw"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/29xxx/CVE-2024-29034.json","tags":["advisory"]},{"url":"https://github.com/carrierwaveuploader/carrierwave","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2024-29034","title":"CarrierWave's Content-Type allowlist bypass vulnerability which possibly leads to XSS remained","description":"CarrierWave is a solution for file uploads for Rails, Sinatra and other Ruby web frameworks. The vulnerability CVE-2023-49090 wasn't fully addressed. This vulnerability is caused by the fact that when uploading to object storage, including Amazon S3, it is possible to set a Content-Type value that is interpreted by browsers to be different from what's allowed by `content_type_allowlist`, by providing multiple values separated by commas. This bypassed value can be used to cause XSS. Upgrade to 3.0.7 or 2.2.6.\n","status":"published","published":"2024-03-24T19:27:35.996Z","modified":"2024-08-02T01:03:51.518Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-436","CWE-79"],"updated_at":"2026-11-02T14:34:15.337999Z"}],"euvd":[{"id":"EUVD-2024-1016","description":"CarrierWave is a solution for file uploads for Rails, Sinatra and other Ruby web frameworks. The vulnerability CVE-2023-49090 wasn't fully addressed. This vulnerability is caused by the fact that when uploading to object storage, including Amazon S3, it is possible to set a Content-Type value that is interpreted by browsers to be different from what's allowed by `content_type_allowlist`, by providing multiple values separated by commas. This bypassed value can be used to cause XSS. Upgrade to 3.0.7 or 2.2.6.\n","status":"published","published":"2024-03-24T19:27:35Z","modified":"2024-08-02T01:03:51Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-03T03:50:26.166982Z"}],"ghsa":[{"id":"GHSA-vfmv-jfc5-pjjw","title":"CarrierWave content-Type allowlist bypass vulnerability which possibly leads to XSS remained","description":"### Impact\nThe vulnerability [CVE-2023-49090](https://github.com/carrierwaveuploader/carrierwave/security/advisories/GHSA-gxhx-g4fq-49hj) wasn't fully addressed.\n\nThis vulnerability is caused by the fact that when uploading to object storage, including Amazon S3, it is possible to set a Content-Type value that is interpreted by browsers to be different from what's allowed by `content_type_allowlist`, by providing multiple values separated by commas.\n\nThis bypassed value can be used to cause XSS.\n\n### Patches\nUpgrade to [3.0.7](https://rubygems.org/gems/carrierwave/versions/3.0.7) or [2.2.6](https://rubygems.org/gems/carrierwave/versions/2.2.6).\n\n### Workarounds\nUse the following monkey patch to let CarrierWave parse the Content-type by using `Marcel::MimeType.for`.\n\n```ruby\n# For CarrierWave 3.x\nCarrierWave::SanitizedFile.class_eval do\n  def declared_content_type\n    @declared_content_type ||\n      if @file.respond_to?(:content_type) \u0026\u0026 @file.content_type\n        Marcel::MimeType.for(declared_type: @file.content_type.to_s.chomp)\n      end\n  end\nend\n```\n\n```ruby\n# For CarrierWave 2.x\nCarrierWave::SanitizedFile.class_eval do\n  def existing_content_type\n    if @file.respond_to?(:content_type) \u0026\u0026 @file.content_type\n      Marcel::MimeType.for(declared_type: @file.content_type.to_s.chomp)\n    end\n  end\nend\n```\n\n### References\n[OWASP - File Upload Cheat Sheet](https://cheatsheetseries.owasp.org/cheatsheets/File_Upload_Cheat_Sheet.html#content-type-validation)\n\n","status":"published","published":"2024-03-25T19:40:36Z","modified":"2024-03-27T13:00:01Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-79","CWE-436"],"updated_at":"2026-11-02T14:37:41.821668Z"}],"nvd":[{"id":"CVE-2024-29034","description":"CarrierWave is a solution for file uploads for Rails, Sinatra and other Ruby web frameworks. The vulnerability CVE-2023-49090 wasn't fully addressed. This vulnerability is caused by the fact that when uploading to object storage, including Amazon S3, it is possible to set a Content-Type value that is interpreted by browsers to be different from what's allowed by `content_type_allowlist`, by providing multiple values separated by commas. This bypassed value can be used to cause XSS. Upgrade to 3.0.7 or 2.2.6.\n","status":"published","published":"2024-03-24T20:15:07.77Z","modified":"2026-06-17T07:22:17.663Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-79","CWE-436"],"updated_at":"2026-11-02T14:09:43.052376Z"}],"osv":[{"id":"CVE-2024-29034","title":"CarrierWave's Content-Type allowlist bypass vulnerability which possibly leads to XSS remained","description":"CarrierWave is a solution for file uploads for Rails, Sinatra and other Ruby web frameworks. The vulnerability CVE-2023-49090 wasn't fully addressed. This vulnerability is caused by the fact that when uploading to object storage, including Amazon S3, it is possible to set a Content-Type value that is interpreted by browsers to be different from what's allowed by `content_type_allowlist`, by providing multiple values separated by commas. This bypassed value can be used to cause XSS. Upgrade to 3.0.7 or 2.2.6.\n","status":"published","published":"2024-03-24T19:27:35.996Z","modified":"2026-10-28T02:31:07.25651799Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-436","CWE-79"],"updated_at":"2026-11-02T15:44:40.06138Z"},{"id":"GHSA-vfmv-jfc5-pjjw","title":"CarrierWave content-Type allowlist bypass vulnerability which possibly leads to XSS remained","description":"### Impact\nThe vulnerability [CVE-2023-49090](https://github.com/carrierwaveuploader/carrierwave/security/advisories/GHSA-gxhx-g4fq-49hj) wasn't fully addressed.\n\nThis vulnerability is caused by the fact that when uploading to object storage, including Amazon S3, it is possible to set a Content-Type value that is interpreted by browsers to be different from what's allowed by `content_type_allowlist`, by providing multiple values separated by commas.\n\nThis bypassed value can be used to cause XSS.\n\n### Patches\nUpgrade to [3.0.7](https://rubygems.org/gems/carrierwave/versions/3.0.7) or [2.2.6](https://rubygems.org/gems/carrierwave/versions/2.2.6).\n\n### Workarounds\nUse the following monkey patch to let CarrierWave parse the Content-type by using `Marcel::MimeType.for`.\n\n```ruby\n# For CarrierWave 3.x\nCarrierWave::SanitizedFile.class_eval do\n  def declared_content_type\n    @declared_content_type ||\n      if @file.respond_to?(:content_type) \u0026\u0026 @file.content_type\n        Marcel::MimeType.for(declared_type: @file.content_type.to_s.chomp)\n      end\n  end\nend\n```\n\n```ruby\n# For CarrierWave 2.x\nCarrierWave::SanitizedFile.class_eval do\n  def existing_content_type\n    if @file.respond_to?(:content_type) \u0026\u0026 @file.content_type\n      Marcel::MimeType.for(declared_type: @file.content_type.to_s.chomp)\n    end\n  end\nend\n```\n\n### References\n[OWASP - File Upload Cheat Sheet](https://cheatsheetseries.owasp.org/cheatsheets/File_Upload_Cheat_Sheet.html#content-type-validation)\n\n","status":"published","published":"2024-03-25T19:40:36Z","modified":"2024-03-27T13:00:01Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-436","CWE-79"],"updated_at":"2026-11-02T15:46:57.348035Z"}]}}