High

Security advisory

Type: advisorySources: OSVCVE: CVE-2021-21305

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.

Products: Not specified
Affected versions: Not specified
Fixed versions: Not specified
CVEs: CVE-2021-21305
Confirmed fixed CVEs: Not specified
Updated in this feed: 31 Oct 2026, 11:32 UTC · Revision 1

Source evidence

CVE-2021-21305

core-osv · Original source

Published 8 Feb 2021, 20:15 UTC

osv:CVE-2021-21305

Complete source record

{
  "id": "5ae5d463c1f9ab6c27e8d48ab08a62cfce3b3ae44885288b516afabedbbfca20",
  "url": "https://osv.dev/vulnerability/CVE-2021-21305",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-21305",
    "summary": "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.",
    "evidence": "osv:CVE-2021-21305",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-21305",
      "aliases": [
        "CVE-2021-21305",
        "GHSA-cf3w-g86h-35x4"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/carrierwaveuploader/carrierwave",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "56f39b23d16431a79faf8e361d4ee08238db2f66"
                },
                {
                  "introduced": "e1c3eea981ad3963bf5bf5af586286abd1252caa"
                },
                {
                  "fixed": "003e2ceeaa856f2605cf8096b401e76168ffc8ba"
                },
                {
                  "fixed": "387116f5c72efa42bc3938d946b4c8d2f22181b7"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:carrierwave_project:carrierwave:*:*:*:*:*:ruby:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.3.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:carrierwave_project:carrierwave:*:*:*:*:*:ruby:*:*",
                    "range": [
                      {
                        "introduced": "2.0.1"
                      },
                      {
                        "fixed": "2.1.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "387116f5c72efa42bc3938d946b4c8d2f22181b7"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.1.0",
            "v2.0.2",
            "v2.0.1",
            "v1.3.1",
            "v1.3.0",
            "v1.2.3",
            "v1.2.2",
            "v1.2.1",
            "v1.2.0",
            "v1.1.0",
            "v1.0.0",
            "v1.0.0.rc",
            "v1.0.0.beta",
            "v0.8.0",
            "v0.7.1",
            "v0.7.0",
            "v0.6.2",
            "v0.6.1",
            "v0.6.0",
            "v0.5.8",
            "v0.5.6",
            "v0.5.5",
            "v0.5.3",
            "v0.5.1",
            "v0.5.0",
            "v0.5.0.beta2",
            "v0.4.5",
            "v0.4.3",
            "v0.4.2",
            "v0.3.5",
            "v0.3.4",
            "v0.3.3",
            "v0.3.2",
            "v0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-21305.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:28.112256017Z",
      "provider": "osv",
      "references": [
        "https://github.com/carrierwaveuploader/carrierwave/blob/master/CHANGELOG.md#132---2021-02-08",
        "https://github.com/carrierwaveuploader/carrierwave/blob/master/CHANGELOG.md#211---2021-02-08",
        "https://rubygems.org/gems/carrierwave",
        "https://github.com/carrierwaveuploader/carrierwave/commit/387116f5c72efa42bc3938d946b4c8d2f22181b7",
        "https://github.com/carrierwaveuploader/carrierwave/security/advisories/GHSA-cf3w-g86h-35x4"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-21305",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385402,
  "published_at": "2021-02-08T20:15:12.527+00:00"
}