---
id: CVE-2026-85211
title: >-
  Label Studio fails to apply organization filters when resolving storage URIs
  for tasks and projects in proxy_api.py endpoints
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 ar…
severity: high
cvss: 7.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N'
cwe:
  - CWE-639
published: '2026-09-03'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T15:53:23.707'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-85211'
references:
  - url: 'https://github.com/HumanSignal/label-studio'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/HumanSignal/label-studio/blob/1.23.0/label_studio/io_storages/proxy_api.py
    label: disclosure@vulncheck.com
  - url: 'https://github.com/HumanSignal/label-studio/issues/9924'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/label-studio-through-1.23.0-cross-organization-storage-uri-resolution
    label: disclosure@vulncheck.com
  - url: 'https://github.com/HumanSignal/label-studio/issues/9924'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - cve.org
  - exploit-available
epss: 0.00415
epssPercentile: 0.33243
ingestedAt: '2026-09-10T16:57:28.701Z'
vendor: HumanSignal
product: label-studio
affected:
  - label-studio <= 1.23.0
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-03T14:31:54.131910Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.