Is CVE-2026-85211 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-85211 being exploited in the wild.

How severe is CVE-2026-85211?

High severity, with a CVSS score of 7.7, published 3 September 2026.

Which products and versions are affected?

HumanSignal Label Studio 1.23.0 and likely prior versions.

Is there a fix for CVE-2026-85211?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-85211 attacked?

It is attacked over the network.

Am I affected by CVE-2026-85211?

Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-85211: Label Studio organization filter bypass in proxy_api.py

CVE-2026-85211 · Severity: high · CVSS 7.7 · Published 2026-09-03

Label Studio is a data labeling and annotation platform that manages cloud storage access for tasks and projects. An attacker can bypass multi-tenant isolation by creating a separate organization and accessing other tenants' cloud storage objects without proper authorization, exposing sensitive files stored in shared buckets.

Quick answers

Is CVE-2026-85211 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-85211 being exploited in the wild.
How severe is CVE-2026-85211?: High severity, with a CVSS score of 7.7, published 3 September 2026.
Which products and versions are affected?: HumanSignal Label Studio 1.23.0 and likely prior versions.
Is there a fix for CVE-2026-85211?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-85211 attacked?: It is attacked over the network.
Am I affected by CVE-2026-85211?: Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

Label Studio fails to apply organization filters when resolving storage URIs in proxy_api.py endpoints that handle task and project storage access. The vulnerability is a multi-tenant authorization bypass (CWE-639/CWE-284) affecting storage presigning and streaming operations. An attacker authenticated to one organization can craft requests with arbitrary storage URIs to access cloud storage objects belonging to other organizations. No special privileges are required beyond creating a separate organization account. The attack is network-reachable and does not require additional user interaction.

Affected products

HumanSignal Label Studio 1.23.0 and likely prior versions

Timeline

2026-09-03: disclosed

References

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