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CVE-2026-85211— Label Studio through 1.23.0 Cross-Organization Storage URI Resolution

Quick assessment

Affected
HumanSignal label-studio
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

HumanSignal Label Studio是HumanSignal公司开源的一个数据标注平台。 HumanSignal Label Studio 1.23.0及之前版本存在授权问题漏洞，该漏洞源于在proxy_api.py端点中解析任务和项目的存储URI时未应用组织过滤器，可能导致攻击者通过创建单独组织并提供任意文件URI来访问其他租户的云存储对象。

CVSS 7.7 · High EPSS 0.41% · P34

Possible ATT&CK Techniques 1 AI

T1039 · Data from Network Shared Drive

Affected Version Matrix 1

VendorProduct Version RangeStatus
HumanSignal label-studio ≤ 1.23.0 affected
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I. Basic Information for CVE-2026-85211

Vulnerability Information
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Vulnerability Title
Label Studio through 1.23.0 Cross-Organization Storage URI Resolution
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
HumanSignal Label Studio 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
HumanSignal Label Studio是HumanSignal公司开源的一个数据标注平台。 HumanSignal Label Studio 1.23.0及之前版本存在授权问题漏洞，该漏洞源于在proxy_api.py端点中解析任务和项目的存储URI时未应用组织过滤器，可能导致攻击者通过创建单独组织并提供任意文件URI来访问其他租户的云存储对象。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
HumanSignal label-studio 0 ~ 1.23.0 -

II. Public POCs for CVE-2026-85211

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III. Intelligence Information for CVE-2026-85211

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Patches & Fixes for CVE-2026-85211 (1)

Vendor Advisories for CVE-2026-85211 (2)

Vendor Pages for CVE-2026-85211 (1)

IV. Related Vulnerabilities

Same product: label-studio
Same vendor: HumanSignal
Same weakness: CWE-639

V. Comments for CVE-2026-85211

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