{"id":"CVE-2026-91774","aliases":["EUVD-2026-78250","GHSA-9q89-m4c3-34ff"],"status":"published","title":"Yao through v1.0.0-rc22 Missing Authorization via OpenAPI team endpoint","description":"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.","severity":{"version":"4.0","score":5.3,"vector":"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","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00342,"percentile":0.28099,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-862"],"published":"2026-09-15T01:20:35Z","modified":"2026-10-28T02:30:58Z","products":[{"vendor":"yaoapp","product":"yao"}],"references":[{"url":"https://github.com/YaoApp/yao/issues/1553","tags":["issue-tracking","report"]},{"url":"https://github.com/YaoApp/yao/blob/v1.0.0-rc22/openapi/user/team.go#L80-L149","tags":["technical-description","article"]},{"url":"https://github.com/YaoApp/yao/blob/v1.0.0-rc22/openapi/oauth/providers/user/team.go#L37-L55","tags":["technical-description","article"]},{"url":"https://github.com/YaoApp/yao","tags":["product","package"]},{"url":"https://www.vulncheck.com/advisories/yao-through-1.0.0-rc22-missing-authorization-via-openapi-team-endpoint","tags":["third-party-advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-91774","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-9q89-m4c3-34ff"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91774.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-91774","title":"Yao through v1.0.0-rc22 Missing Authorization via OpenAPI team endpoint","description":"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.","status":"published","published":"2026-09-15T01:20:35.168Z","modified":"2026-09-24T14:22:26.964Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium","assessor":"cna"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:19:53.115938Z"}],"euvd":[{"id":"EUVD-2026-78250","description":"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.","status":"published","published":"2026-09-15T01:20:35Z","modified":"2026-09-24T14:22:26Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium"}],"updated_at":"2026-11-02T17:27:57.402158Z"}],"ghsa":[{"id":"GHSA-9q89-m4c3-34ff","title":"Yao through v1.0.0-rc22 authenticates but fails to authorize the GET /user/teams/:id endpoint,...","description":"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.","status":"published","published":"2026-09-15T03:30:30Z","modified":"2026-09-15T03:30:30Z","cvss":[{"version":"4.0","score":5.3,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T15:11:53.5286Z"}],"nvd":[{"id":"CVE-2026-91774","description":"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.","status":"published","published":"2026-09-15T02:16:50.183Z","modified":"2026-09-23T17:17:47.883Z","cvss":[{"version":"4.0","score":5.3,"vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":4.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T14:12:47.335523Z"}],"osv":[{"id":"CVE-2026-91774","title":"Yao through v1.0.0-rc22 Missing Authorization via OpenAPI team endpoint","description":"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.","status":"published","published":"2026-09-15T01:20:35.168Z","modified":"2026-10-28T02:30:58.978054085Z","cvss":[{"version":"4.0","score":5.3,"vector":"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","level":"medium"}],"cwes":["CWE-862"],"updated_at":"2026-11-02T15:45:20.269367Z"}]}}