VulnerabilityDeferred
CVE-2026-85211
Attackers can access other tenants' cloud storage objects by creating a separate organization and supplying arbitrary file URIs to presign or stream bucket contents.
HIGH 8.3EPSS 0.24%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.24%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 4.0
- 8.3 HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
- EPSS
- 0.24% probability · 15th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-639
- Source
- disclosure@vulncheck.com
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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.