{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "last_affected": "1.0.0-rc22"
              },
              {
                "fixed": "v1.0.0-rc22"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "DESCRIPTION"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5774ce8de5a4d832a1808d942f87c60de86c78e7"
            }
          ],
          "repo": "https://github.com/yaoapp/yao",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-862"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91774.json"
  },
  "details": "Yao through v1.0.0-rc22 authenticates but fails to authorize the GET /user/teams/:id endpoint, allowing any logged-in user to read full team records. Attackers can supply a known team identifier to retrieve sensitive team data including name, description, owner information, and settings without membership verification.",
  "id": "CVE-2026-91774",
  "modified": "2026-09-19T03:31:01.100127969Z",
  "published": "2026-09-15T01:20:35.168Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91774.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-91774"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/yao-through-1.0.0-rc22-missing-authorization-via-openapi-team-endpoint"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/YaoApp/yao/issues/1553"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/YaoApp/yao"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/YaoApp/yao/blob/v1.0.0-rc22/openapi/oauth/providers/user/team.go#L37-L55"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/YaoApp/yao/blob/v1.0.0-rc22/openapi/user/team.go#L80-L149"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Yao through v1.0.0-rc22 Missing Authorization via OpenAPI team endpoint"
}