Security advisory

{
  "id": "d24ca9d9b1be7b7e8ab3473004ce8c5c5f474c8f524daf4d5865e56839959d92",
  "url": "https://osv.dev/vulnerability/CVE-2021-27098",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-27098",
    "summary": "In SPIRE 0.8.1 through 0.8.4 and before versions 0.9.4, 0.10.2, 0.11.3 and 0.12.1, specially crafted requests to the FetchX509SVID RPC of SPIRE Server’s Legacy Node API can result in the possible issuance of an X.509 certificate with a URI SAN for a SPIFFE ID that the agent is not authorized to distribute. Proper controls are in place to require that the caller presents a valid agent certificate that is already authorized to issue at least one SPIFFE ID, and the requested SPIFFE ID belongs to the same trust domain, prior to being able to trigger this vulnerability. This issue has been fixed in SPIRE versions 0.8.5, 0.9.4, 0.10.2, 0.11.3 and 0.12.1.",
    "evidence": "osv:CVE-2021-27098",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-27098",
      "aliases": [
        "CVE-2021-27098",
        "GHSA-h746-rm5q-8mgq"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/spiffe/spire",
              "type": "GIT",
              "events": [
                {
                  "introduced": "65b70eb3ccb7c2deac63d4432fa25892e5a6cc20"
                },
                {
                  "last_affected": "1d34b5ba9587f3ff5181e031fa6e17ee303e0514"
                },
                {
                  "introduced": "f2a8727b2404fbf95a283bd543ef4de49f648047"
                },
                {
                  "fixed": "bcc218e5d5432fffcda3593aee97df69db0f4c87"
                },
                {
                  "introduced": "429286051c1e0d729be2bec8d7ee26204494cf7a"
                },
                {
                  "fixed": "5adc2d93869fa3bcc6f0dc45a727c4e6db384eb5"
                },
                {
                  "introduced": "2e266b84a0486128efc4ca7179ce3ef943c0baad"
                },
                {
                  "fixed": "a1762b93059a7408f85cf3c1d5a23bee45fd0d4f"
                },
                {
                  "introduced": "ead65eef8c186f55a3366a814ca1e1c2ae52e73c"
                },
                {
                  "fixed": "3c5115b57afc20a0a2c2b1b9dd60dd1fd9082e13"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:cncf:spire:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0.8.1"
                      },
                      {
                        "last_affected": "0.8.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:cncf:spire:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0.9.0"
                      },
                      {
                        "fixed": "0.9.4"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:cncf:spire:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0.10.0"
                      },
                      {
                        "fixed": "0.10.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:cncf:spire:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0.11.0"
                      },
                      {
                        "fixed": "0.11.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:cncf:spire:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0.12.0"
                      },
                      {
                        "fixed": "0.12.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.12.0",
            "proto/spire/v0.12.0",
            "v0.11.2",
            "proto/spire/v0.11.2",
            "v0.9.3",
            "proto/spire/v0.9.3",
            "v0.10.1",
            "proto/spire/v0.10.1",
            "0.8.4",
            "v0.11.1",
            "proto/spire/v0.11.1",
            "v0.11.0",
            "proto/spire/v0.11.0",
            "v0.10.0",
            "proto/spire/v0.10.0",
            "v0.9.2",
            "proto/spire/v0.9.2",
            "0.9.1",
            "0.9.0",
            "0.8.3",
            "0.8.2",
            "0.8.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-27098.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:37.979988694Z",
      "provider": "osv",
      "references": [
        "https://github.com/spiffe/spire/security/advisories/GHSA-h746-rm5q-8mgq"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-27098",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385781,
  "published_at": "2021-03-05T17:15:14.92+00:00"
}