CVE-2026-91774Yao through v1.0.0-rc22 Missing Authorization via OpenAPI team endpoint
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 4.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- Weakness (CWE)
- CWE-862
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Sep 24, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
YaoApp yao yaoapp:yao (from the name) | through 1.0.0-rc22 | CNA record |
References
- https://github.com/YaoApp/yao/issues/1553issue-tracking
- https://github.com/YaoApp/yao/blob/v1.0.0-rc22/openapi/user/team.go#L80-L149technical-description
- https://github.com/YaoApp/yao/blob/v1.0.0-rc22/openapi/oauth/providers/user/team.go#L37-L55technical-description
- https://github.com/YaoApp/yaoproduct
- https://www.vulncheck.com/advisories/yao-through-1.0.0-rc22-missing-authorization-via-openapi-team-endpointthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.