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rails — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2026-33176

Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, Active Support number helpers accept strings containing scientific notation (e.g. `1e10000`), which `BigDecimal` expands into extremely large decimal representations. This can cause excessive memory allocation and CPU consumption when the expanded number is formatted, possibly resulting in a DoS vulnerability. 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-2026-33176
Confirmed fixed CVEs
Not specified
Updated in this feed
28 Oct 2026, 10:03 UTC · Revision 1

Source evidence

DEBIAN-CVE-2026-33176

core-osv · Original source

Published 24 Mar 2026, 00:16 UTC

Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, Active Support number helpers accept strings containing scientific notation (e.g. `1e10000`), which `BigDecimal` expands into extremely large decimal representations. This can cause excessive memory allocation and CPU consumption when the expanded number is formatted, possibly resulting in a DoS vulnerability. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.

osv:DEBIAN-CVE-2026-33176

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": "6bb14ee71e87f5c4e73da4ef8157ffbcc031356ccec93ec031b834f0e22ba51c",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2026-33176",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2026-33176",
    "summary": "Active Support is a toolkit of support libraries and Ruby core extensions extracted from the Rails framework. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, Active Support number helpers accept strings containing scientific notation (e.g. `1e10000`), which `BigDecimal` expands into extremely large decimal representations. This can cause excessive memory allocation and CPU consumption when the expanded number is formatted, possibly resulting in a DoS vulnerability. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.",
    "evidence": "osv:DEBIAN-CVE-2026-33176",
    "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": "high",
    "structured": {
      "id": "DEBIAN-CVE-2026-33176",
      "aliases": [
        "DEBIAN-CVE-2026-33176"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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-2026-33176.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-2026-33176.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-2026-33176.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-08T18:00:07.128787168Z",
      "provider": "osv",
      "upstream": [
        "CVE-2026-33176"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2026-33176"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2026-33176",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 104426,
  "published_at": "2026-03-24T00:16:28.807+00:00"
}