TI-2026-61985 Aliases CVE-2026-91774 GHSA-9q89-m4c3-34ff

Yao through v1.0.0-rc22 Missing Authorization via OpenAPI team endpoint

LOW 24CWE-862Published 2026-09-15 · Updated 2026-09-24

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Security bypass
Confidentiality · integrity · availability: Low · None · None
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00342 27th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
YaoApp	yao	up to 1.0.0-rc22	—	No fix listed	CNA

yao VendorYaoApp Affected up to 1.0.0-rc22 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2026-91774
2026-10-03 Alias added: GHSA-9q89-m4c3-34ff

References

Other 4

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences