CVE-2026-91774CWE-862broken-access-control

CVE-2026-91774

Medium · published September 15, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
26.5
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
5.3 · 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
EPSS
0.00342 · 26.5th percentile
Weakness
CWE-862 · Missing Authorization
Published
2026-09-15T06:16Z
References (5)
https://github.com/YaoApp/yao · [email protected]https://github.com/YaoApp/yao/blob/v1.0.0-rc22/openapi/oauth/providers/user/team.go#L37-L55 · [email protected]https://github.com/YaoApp/yao/blob/v1.0.0-rc22/openapi/user/team.go#L80-L149 · [email protected]https://github.com/YaoApp/yao/issues/1553 · [email protected]https://www.vulncheck.com/advisories/yao-through-1.0.0-rc22-missing-authorization-via-openapi-team-endpoint · [email protected]
EPSS history
Timeline
  • 17 SEP 03:33Z
    EPSS moved — → 0%
    epss
  • 15 SEP 01:20Z
    Yao through v1.0.0-rc22 Missing Authorization via OpenAPI team endpoint
    cvelistv5