CVE-2026-85211

Summary

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.

Affected Software

Weaknesses

• CWE-639: Authorization Bypass Through User-Controlled Key

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: partial

Additional References

• https://github.com/HumanSignal/label-studio/issues/9924

References

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

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