CVE-2026-91774
Yao through v1.0.0-rc22 Missing Authorization via OpenAPI team endpoint
CVSS Score
4.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-862 |
| Vendor | yaoapp |
| Product | yao |
| Published | Sep 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Affected Versions
YaoApp / yao
0 ≤ 1.0.0-rc22
References
github.com: https://github.com/YaoApp/yao/issues/1553 github.com: https://github.com/YaoApp/yao/blob/v1.0.0-rc22/openapi/user/team.go#L80-L149 github.com: https://github.com/YaoApp/yao/blob/v1.0.0-rc22/openapi/oauth/providers/user/team.go#L37-L55 github.com: https://github.com/YaoApp/yao vulncheck.com: https://www.vulncheck.com/advisories/yao-through-1.0.0-rc22-missing-authorization-via-openapi-team-endpoint
Credits
🔍 George Chen