CVE-2026-85211

Description

Label Studio fails to apply organization filters when resolving storage URIs for tasks and projects in proxy_api.py endpoints. Attackers can access other tenants' cloud storage objects by creating a separate organization and supplying arbitrary file URIs to presign or stream bucket contents.

References

• https://github.com/HumanSignal/label-studio
• https://github.com/HumanSignal/label-studio/blob/1.23.0/label_studio/io_storages/proxy_api.py
• https://github.com/HumanSignal/label-studio/issues/9924
• https://www.vulncheck.com/advisories/label-studio-through-1.23.0-cross-organization-storage-uri-resolution
• https://github.com/HumanSignal/label-studio/issues/9924