Tandoor Recipes: Private recipe authorization bypass via /api/step/ - read and modify another Space member's private recipe content

{
  "id": "2f484ded43b6b1fd7a1c4f87dedb7da417c8f4fbea88ae04056e79bfd7315dfb",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-61726",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Tandoor Recipes: Private recipe authorization bypass via /api/step/ - read and modify another Space member's private recipe content",
    "summary": "Tandoor Recipes is an application for managing recipes, planning meals, and building shopping lists. Prior to 2.6.12, StepViewSet and IngredientViewSet filter only by active Space and use role-level CustomIsUser checks instead of the private-recipe owner or sharing predicate when an authenticated user with read and write API scope in the victim's Space supplies a private recipe or step identifier to the Step API. Request processing uses StepViewSet, IngredientViewSet, api/step/, api/step/{step_id}/, CustomIsUser, CustomRecipePermission. The attack works because the sub-resource querysets return and update private-recipe steps for non-owners because Space membership is accepted without recipe-level authorization. This can read and silently modify another same-Space member's private recipe instructions, while cross-Space access remains out of scope. This issue is fixed in version 2.6.12.",
    "evidence": "cve:CVE-2026-61726",
    "products": [
      {
        "name": {
          "value": "recipes",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-61726",
      "aliases": [
        "CVE-2026-61726"
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "scope": "UNCHANGED",
            "version": "3.1",
            "baseScore": 8.1,
            "attackVector": "NETWORK",
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N",
            "integrityImpact": "HIGH",
            "userInteraction": "NONE",
            "attackComplexity": "LOW",
            "availabilityImpact": "NONE",
            "privilegesRequired": "LOW",
            "confidentialityImpact": "HIGH"
          }
        }
      ],
      "affected": [
        {
          "vendor": "TandoorRecipes",
          "product": "recipes",
          "versions": [
            {
              "status": "affected",
              "version": "< 2.6.12"
            }
          ]
        }
      ],
      "modified": "2026-10-28T18:00:30.729Z",
      "provider": "cve",
      "references": [
        "https://github.com/TandoorRecipes/recipes/security/advisories/GHSA-wjf3-fq5w-7j7w",
        "https://github.com/TandoorRecipes/recipes/commit/3c5678f663e62e6ddf3d7df0b2bcc89ce2f52def",
        "https://github.com/TandoorRecipes/recipes/releases/tag/2.6.12"
      ],
      "provider_metadata": {
        "adp": [
          {
            "title": "CISA ADP Vulnrichment",
            "metrics": [
              {
                "other": {
                  "type": "ssvc",
                  "content": {
                    "id": "CVE-2026-61726",
                    "role": "CISA Coordinator",
                    "options": [
                      {
                        "Exploitation": "poc"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "total"
                      }
                    ],
                    "version": "2.0.3",
                    "timestamp": "2026-10-28T18:00:13.678685Z"
                  }
                }
              }
            ],
            "references": [
              {
                "url": "https://github.com/TandoorRecipes/recipes/security/advisories/GHSA-wjf3-fq5w-7j7w",
                "tags": [
                  "exploit"
                ]
              }
            ],
            "providerMetadata": {
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP",
              "dateUpdated": "2026-10-28T18:00:30.729Z"
            }
          }
        ],
        "cna": {
          "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
          "shortName": "GitHub_M",
          "dateUpdated": "2026-10-16T19:19:57.552Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-61726",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 470550,
  "published_at": "2026-10-16T19:19:57.552+00:00"
}