CVE-2026-91774 Yao through v1.0.0-rc22 Missing Authorization via OpenAPI team endpoint
Any authenticated user can read sensitive team data via the OpenAPI team endpoint due to missing authorization checks.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-91774?
CVE-2026-91774 is a medium-severity missing authorization vulnerability in YaoApp yao, published on 15 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-862
Which versions are affected by CVE-2026-91774?
How do I fix CVE-2026-91774?
No fix has been published for CVE-2026-91774 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-91774 being exploited?
There is no known exploitation of CVE-2026-91774 in the wild and no public exploit code.
Sources
Also known as GHSA-9q89-m4c3-34ff.