CriticalFix available

rails — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2026-33195

Active Storage allows users to attach cloud and local files in Rails applications. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, Active Storage's `DiskService#path_for` does not validate that the resolved filesystem path remains within the storage root directory. If a blob key containing path traversal sequences (e.g. `../`) is used, it could allow reading, writing, or deleting arbitrary files on the server. Blob keys are expected to be trusted strings, but some applications could be passing user input as keys and would be affected. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.

Products: rails
Affected versions: 2:6.1.7.10+dfsg-1~deb12u1, 2:6.1.7.10+dfsg-1~deb12u2, 2:6.1.7.3+dfsg-1, 2:6.1.7.3+dfsg-10, 2:6.1.7.3+dfsg-11, 2:6.1.7.3+dfsg-12, 2:6.1.7.3+dfsg-13, 2:6.1.7.3+dfsg-2, 2:6.1.7.3+dfsg-2~deb12u1, 2:6.1.7.3+dfsg-3, 2:6.1.7.3+dfsg-4, 2:6.1.7.3+dfsg-5, 2:6.1.7.3+dfsg-6, 2:6.1.7.3+dfsg-7, 2:6.1.7.3+dfsg-7~exp1, 2:6.1.7.3+dfsg-8, 2:6.1.7.3+dfsg-9, 2:7.2.2.1+dfsg-7, 2:7.2.2.2+dfsg-1, 2:7.2.2.2+dfsg-2, 2:7.2.2.2+dfsg-2~deb13u1, 2:7.2.2.2+dfsg-2~deb13u2, 2:7.2.3+dfsg-1, 2:7.2.3+dfsg-2, 2:7.2.3+dfsg-3
Fixed versions: 2:6.1.7.10+dfsg-1~deb12u3, 2:7.2.2.2+dfsg-2~deb13u2, 2:7.2.3.1+dfsg-1
CVEs: CVE-2026-33195
Confirmed fixed CVEs: Not specified
Updated in this feed: 28 Oct 2026, 10:03 UTC · Revision 1

Source evidence

DEBIAN-CVE-2026-33195

core-osv · Original source

Published 24 Mar 2026, 00:16 UTC

osv:DEBIAN-CVE-2026-33195

rails

Fixed versions: 2:6.1.7.10+dfsg-1~deb12u3

rails

Fixed versions: 2:7.2.2.2+dfsg-2~deb13u2

rails

Fixed versions: 2:7.2.3.1+dfsg-1

Complete source record

{
  "id": "5322a03c4592701c5d2a36e46c49dd43b32510f1cbaf8cdc233bdeb1b8628427",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-33195",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2026-33195",
    "summary": "Active Storage allows users to attach cloud and local files in Rails applications. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, Active Storage's `DiskService#path_for` does not validate that the resolved filesystem path remains within the storage root directory. If a blob key containing path traversal sequences (e.g. `../`) is used, it could allow reading, writing, or deleting arbitrary files on the server. Blob keys are expected to be trusted strings, but some applications could be passing user input as keys and would be affected. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.",
    "evidence": "osv:DEBIAN-CVE-2026-33195",
    "products": [
      {
        "name": {
          "value": "rails",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2:6.1.7.10+dfsg-1~deb12u3",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "2:6.1.7.10+dfsg-1~deb12u1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2:6.1.7.10+dfsg-1~deb12u2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2:6.1.7.3+dfsg-1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2:6.1.7.3+dfsg-10",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2:6.1.7.3+dfsg-11",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2:6.1.7.3+dfsg-12",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2:6.1.7.3+dfsg-13",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2:6.1.7.3+dfsg-2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2:6.1.7.3+dfsg-2~deb12u1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2:6.1.7.3+dfsg-3",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2:6.1.7.3+dfsg-4",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2:6.1.7.3+dfsg-5",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2:6.1.7.3+dfsg-6",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2:6.1.7.3+dfsg-7",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2:6.1.7.3+dfsg-7~exp1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2:6.1.7.3+dfsg-8",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "2:6.1.7.3+dfsg-9",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "rails",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2:7.2.2.2+dfsg-2~deb13u2",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "2:7.2.2.1+dfsg-7",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2:7.2.2.2+dfsg-1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "2:7.2.2.2+dfsg-2~deb13u1",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "rails",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "2:7.2.3.1+dfsg-1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": [
          {
            "value": "2:7.2.2.1+dfsg-7",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2:7.2.2.2+dfsg-1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2:7.2.2.2+dfsg-2",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2:7.2.2.2+dfsg-2~deb13u1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2:7.2.2.2+dfsg-2~deb13u2",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2:7.2.3+dfsg-1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2:7.2.3+dfsg-2",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "2:7.2.3+dfsg-3",
            "evidence": "/affected/2/versions"
          }
        ]
      }
    ],
    "severity": "critical",
    "structured": {
      "id": "DEBIAN-CVE-2026-33195",
      "aliases": [
        "DEBIAN-CVE-2026-33195"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2:6.1.7.10+dfsg-1~deb12u3"
                }
              ]
            }
          ],
          "package": {
            "name": "rails",
            "purl": "pkg:deb/debian/rails?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "versions": [
            "2:6.1.7.10+dfsg-1~deb12u1",
            "2:6.1.7.10+dfsg-1~deb12u2",
            "2:6.1.7.3+dfsg-1",
            "2:6.1.7.3+dfsg-10",
            "2:6.1.7.3+dfsg-11",
            "2:6.1.7.3+dfsg-12",
            "2:6.1.7.3+dfsg-13",
            "2:6.1.7.3+dfsg-2",
            "2:6.1.7.3+dfsg-2~deb12u1",
            "2:6.1.7.3+dfsg-3",
            "2:6.1.7.3+dfsg-4",
            "2:6.1.7.3+dfsg-5",
            "2:6.1.7.3+dfsg-6",
            "2:6.1.7.3+dfsg-7",
            "2:6.1.7.3+dfsg-7~exp1",
            "2:6.1.7.3+dfsg-8",
            "2:6.1.7.3+dfsg-9"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-33195.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2:7.2.2.2+dfsg-2~deb13u2"
                }
              ]
            }
          ],
          "package": {
            "name": "rails",
            "purl": "pkg:deb/debian/rails?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "versions": [
            "2:7.2.2.1+dfsg-7",
            "2:7.2.2.2+dfsg-1",
            "2:7.2.2.2+dfsg-2~deb13u1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-33195.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2:7.2.3.1+dfsg-1"
                }
              ]
            }
          ],
          "package": {
            "name": "rails",
            "purl": "pkg:deb/debian/rails?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "versions": [
            "2:7.2.2.1+dfsg-7",
            "2:7.2.2.2+dfsg-1",
            "2:7.2.2.2+dfsg-2",
            "2:7.2.2.2+dfsg-2~deb13u1",
            "2:7.2.2.2+dfsg-2~deb13u2",
            "2:7.2.3+dfsg-1",
            "2:7.2.3+dfsg-2",
            "2:7.2.3+dfsg-3"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-33195.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-08T18:00:07.087139353Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-33195"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2026-33195"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-33195",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 104420,
  "published_at": "2026-03-24T00:16:28.987+00:00"
}