{"id":"CVE-2021-21305","aliases":["DEBIAN-CVE-2021-21305","EUVD-2021-0545","GHSA-cf3w-g86h-35x4","UBUNTU-CVE-2021-21305","USN-7497-1"],"status":"published","title":"Code Injection vulnerability in CarrierWave","description":"CarrierWave is an open-source RubyGem which provides a simple and flexible way to upload files from Ruby applications. In CarrierWave before versions 1.3.2 and 2.1.1, there is a code injection vulnerability. The \"#manipulate!\" method inappropriately evals the content of mutation option(:read/:write), allowing attackers to craft a string that can be executed as a Ruby code. If an application developer supplies untrusted inputs to the option, it will lead to remote code execution(RCE). This is fixed in versions 1.3.2 and 2.1.1.","severity":{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.13208,"percentile":0.96427,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-74","CWE-94"],"published":"2021-02-08T19:16:39Z","modified":"2026-10-23T18:03:11Z","fixes":[{"ecosystem":"RubyGems","package":"carrierwave","fixed_in":["1.3.2","2.1.1"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:12","package":"ruby-carrierwave","fixed_in":["1.3.2-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:18.04:LTS","package":"ruby-carrierwave","fixed_in":["1.2.2-1ubuntu0.1~esm1"],"sources":["osv"]},{"ecosystem":"Ubuntu:Pro:20.04:LTS","package":"ruby-carrierwave","fixed_in":["1.3.1-2ubuntu0.1~esm1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"RubyGems","package":"carrierwave","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2"}]}]},{"source":"ghsa","ecosystem":"RubyGems","package":"carrierwave","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"fixed":"2.1.1"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"ruby-carrierwave","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2-1"}]}]},{"source":"osv","ecosystem":"RubyGems","package":"carrierwave","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2"}]}],"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"]},{"source":"osv","ecosystem":"RubyGems","package":"carrierwave","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.0.0"},{"fixed":"2.1.1"}]}],"versions":["2.0.0","2.0.1","2.0.2","2.1.0"]},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"ruby-carrierwave","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.10.0+gh-1","0.10.0+gh-2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"ruby-carrierwave","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.2-1ubuntu0.1~esm1"}]}],"versions":["0.10.0+gh-4","1.1.0-3","1.2.2-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"ruby-carrierwave","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.1-2ubuntu0.1~esm1"}]}],"versions":["1.3.1-2"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"ruby-carrierwave","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.2.2-1ubuntu0.1~esm1"}]}],"versions":["0.10.0+gh-4","1.1.0-3","1.2.2-1"],"bundled":2},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"ruby-carrierwave","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.1-2ubuntu0.1~esm1"}]}],"versions":["1.3.1-2"],"bundled":2},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"ruby-carrierwave","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2-2ubuntu0.22.04.1~esm1"}]}],"versions":["1.3.2-2"],"bundled":2},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"ruby-carrierwave","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.2-2ubuntu0.24.04.1~esm1"}]}],"versions":["1.3.2-2"],"bundled":2}],"products":[{"vendor":"carrierwave_project","product":"carrierwave"},{"vendor":"carrierwaveuploader","product":"carrierwave"}],"references":[{"url":"https://github.com/carrierwaveuploader/carrierwave/blob/master/CHANGELOG.md#132---2021-02-08","tags":["x_refsource_MISC","x_transferred","Release Notes","Third Party Advisory","advisory","web","report"]},{"url":"https://github.com/carrierwaveuploader/carrierwave/blob/master/CHANGELOG.md#211---2021-02-08","tags":["x_refsource_MISC","x_transferred","Release Notes","Third Party Advisory","advisory","web","report"]},{"url":"https://github.com/carrierwaveuploader/carrierwave/security/advisories/GHSA-cf3w-g86h-35x4","tags":["x_refsource_CONFIRM","x_transferred","Exploit","Third Party Advisory","evidence","web","report"]},{"url":"https://rubygems.org/gems/carrierwave","tags":["x_refsource_MISC","x_transferred","Product","Third Party Advisory","advisory","web","report"]},{"url":"https://github.com/carrierwaveuploader/carrierwave/commit/387116f5c72efa42bc3938d946b4c8d2f22181b7","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21305","tags":["advisory"]},{"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/carrierwave/CVE-2021-21305.yml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-cf3w-g86h-35x4"},{"url":"https://security-tracker.debian.org/tracker/CVE-2021-21305","tags":["advisory"]},{"url":"https://github.com/carrierwaveuploader/carrierwave","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2021-21305","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-21305","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-7497-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2023-49090","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2021-21305","title":"Code Injection vulnerability in CarrierWave","description":"CarrierWave is an open-source RubyGem which provides a simple and flexible way to upload files from Ruby applications. In CarrierWave before versions 1.3.2 and 2.1.1, there is a code injection vulnerability. The \"#manipulate!\" method inappropriately evals the content of mutation option(:read/:write), allowing attackers to craft a string that can be executed as a Ruby code. If an application developer supplies untrusted inputs to the option, it will lead to remote code execution(RCE). This is fixed in versions 1.3.2 and 2.1.1.","status":"published","published":"2021-02-08T19:20:14Z","modified":"2024-08-03T18:09:15.001Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L","level":"high","assessor":"cna"}],"cwes":["CWE-74"],"updated_at":"2026-11-02T14:33:00.488332Z"}],"euvd":[{"id":"EUVD-2021-0545","description":"CarrierWave is an open-source RubyGem which provides a simple and flexible way to upload files from Ruby applications. In CarrierWave before versions 1.3.2 and 2.1.1, there is a code injection vulnerability. The \"#manipulate!\" method inappropriately evals the content of mutation option(:read/:write), allowing attackers to craft a string that can be executed as a Ruby code. If an application developer supplies untrusted inputs to the option, it will lead to remote code execution(RCE). This is fixed in versions 1.3.2 and 2.1.1.","status":"published","published":"2021-02-08T19:20:14Z","modified":"2024-08-03T18:09:15Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L","level":"high"}],"updated_at":"2026-11-03T03:25:06.913643Z"}],"ghsa":[{"id":"GHSA-cf3w-g86h-35x4","title":"Code Injection vulnerability in CarrierWave::RMagick","description":"### Impact\n[CarrierWave::RMagick](https://github.com/carrierwaveuploader/carrierwave/blob/master/lib/carrierwave/processing/rmagick.rb) has a Code Injection vulnerability. Its `#manipulate!` method inappropriately evals the content of mutation option(`:read`/`:write`), allowing attackers to craft a string that can be executed as a Ruby code.\nIf an application developer supplies untrusted inputs to the option, it will lead to remote code execution(RCE).\n\n(But supplying untrusted input to the option itself is dangerous even in absence of this vulnerability, since is prone to DoS vulnerability - attackers can try to consume massive amounts of memory by resizing to a very large dimension)\n\n### Proof of Concept\n```ruby\nclass MyUploader \u003c CarrierWave::Uploader::Base\n  include CarrierWave::RMagick\nend\n\nMyUploader.new.manipulate!({ read: { density: \"1 }; p 'Hacked'; {\" }}) # =\u003e shows \"Hacked\"\n```\n\n### Patches\nUpgrade to [2.1.1](https://rubygems.org/gems/carrierwave/versions/2.1.1) or [1.3.2](https://rubygems.org/gems/carrierwave/versions/1.3.2).\n\n### Workarounds\nStop supplying untrusted input to `#manipulate!`'s mutation option.\n\n### References\n[Code Injection Software Attack](https://owasp.org/www-community/attacks/Code_Injection)\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [CarrierWave repo](https://github.com/carrierwaveuploader/carrierwave)\n* Email me at [mit.shibuya@gmail.com](mailto:mit.shibuya@gmail.com)","status":"published","published":"2021-02-08T19:16:39Z","modified":"2023-05-04T19:34:57Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L","level":"high"}],"cwes":["CWE-74","CWE-94"],"updated_at":"2026-11-02T14:36:52.310293Z"}],"nvd":[{"id":"CVE-2021-21305","description":"CarrierWave is an open-source RubyGem which provides a simple and flexible way to upload files from Ruby applications. In CarrierWave before versions 1.3.2 and 2.1.1, there is a code injection vulnerability. The \"#manipulate!\" method inappropriately evals the content of mutation option(:read/:write), allowing attackers to craft a string that can be executed as a Ruby code. If an application developer supplies untrusted inputs to the option, it will lead to remote code execution(RCE). This is fixed in versions 1.3.2 and 2.1.1.","status":"published","published":"2021-02-08T20:15:12.527Z","modified":"2026-06-17T03:35:15.433Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L","level":"high","assessor":"secondary"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","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-74","CWE-94"],"updated_at":"2026-11-02T14:06:49.660551Z"}],"osv":[{"id":"CVE-2021-21305","description":"CarrierWave is an open-source RubyGem which provides a simple and flexible way to upload files from Ruby applications. In CarrierWave before versions 1.3.2 and 2.1.1, there is a code injection vulnerability. The \"#manipulate!\" method inappropriately evals the content of mutation option(:read/:write), allowing attackers to craft a string that can be executed as a Ruby code. If an application developer supplies untrusted inputs to the option, it will lead to remote code execution(RCE). This is fixed in versions 1.3.2 and 2.1.1.","status":"published","published":"2021-02-08T20:15:12.527Z","modified":"2026-10-20T10:54:28.112256017Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:18.004149Z"},{"id":"DEBIAN-CVE-2021-21305","description":"CarrierWave is an open-source RubyGem which provides a simple and flexible way to upload files from Ruby applications. In CarrierWave before versions 1.3.2 and 2.1.1, there is a code injection vulnerability. The \"#manipulate!\" method inappropriately evals the content of mutation option(:read/:write), allowing attackers to craft a string that can be executed as a Ruby code. If an application developer supplies untrusted inputs to the option, it will lead to remote code execution(RCE). This is fixed in versions 1.3.2 and 2.1.1.","status":"published","published":"2021-02-08T20:15:12.527Z","modified":"2026-10-23T18:03:11.694038312Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:34.637046Z"},{"id":"GHSA-cf3w-g86h-35x4","title":"Code Injection vulnerability in CarrierWave::RMagick","description":"### Impact\n[CarrierWave::RMagick](https://github.com/carrierwaveuploader/carrierwave/blob/master/lib/carrierwave/processing/rmagick.rb) has a Code Injection vulnerability. Its `#manipulate!` method inappropriately evals the content of mutation option(`:read`/`:write`), allowing attackers to craft a string that can be executed as a Ruby code.\nIf an application developer supplies untrusted inputs to the option, it will lead to remote code execution(RCE).\n\n(But supplying untrusted input to the option itself is dangerous even in absence of this vulnerability, since is prone to DoS vulnerability - attackers can try to consume massive amounts of memory by resizing to a very large dimension)\n\n### Proof of Concept\n```ruby\nclass MyUploader \u003c CarrierWave::Uploader::Base\n  include CarrierWave::RMagick\nend\n\nMyUploader.new.manipulate!({ read: { density: \"1 }; p 'Hacked'; {\" }}) # =\u003e shows \"Hacked\"\n```\n\n### Patches\nUpgrade to [2.1.1](https://rubygems.org/gems/carrierwave/versions/2.1.1) or [1.3.2](https://rubygems.org/gems/carrierwave/versions/1.3.2).\n\n### Workarounds\nStop supplying untrusted input to `#manipulate!`'s mutation option.\n\n### References\n[Code Injection Software Attack](https://owasp.org/www-community/attacks/Code_Injection)\n\n### For more information\nIf you have any questions or comments about this advisory:\n* Open an issue in [CarrierWave repo](https://github.com/carrierwaveuploader/carrierwave)\n* Email me at [mit.shibuya@gmail.com](mailto:mit.shibuya@gmail.com)","status":"published","published":"2021-02-08T19:16:39Z","modified":"2026-07-08T06:28:16.049382966Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L","level":"high"}],"cwes":["CWE-74","CWE-94"],"updated_at":"2026-11-02T15:46:44.927642Z"},{"id":"UBUNTU-CVE-2021-21305","description":"CarrierWave is an open-source RubyGem which provides a simple and flexible way to upload files from Ruby applications. In CarrierWave before versions 1.3.2 and 2.1.1, there is a code injection vulnerability. The \"#manipulate!\" method inappropriately evals the content of mutation option(:read/:write), allowing attackers to craft a string that can be executed as a Ruby code. If an application developer supplies untrusted inputs to the option, it will lead to remote code execution(RCE). This is fixed in versions 1.3.2 and 2.1.1.","status":"published","published":"2021-02-08T20:15:00Z","modified":"2026-02-04T02:51:48.73956Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L","level":"high"},{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:54:26.29421Z"},{"id":"USN-7497-1","title":"ruby-carrierwave vulnerabilities","description":"Rikita Ishikawa discovered that CarrierWave did not correctly sanitize\ncertain inputs. An attacker could possibly use this issue to execute\narbitrary code. This issue only affected Ubuntu 18.04 LTS and\nUbuntu 20.04 LTS. (CVE-2021-21305)\n\nNorihide Saito discovered that CarrierWave did not correctly sanitize\ncertain inputs. An attacker could possibly use this issue to execute a\ncross-site scripting (XSS) attack. (CVE-2023-49090)\n","status":"published","published":"2025-05-07T01:25:52Z","modified":"2026-04-27T17:58:21.383866Z","updated_at":"2026-11-02T16:58:19.988474Z"}]}}