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

> Attackers can access other tenants' cloud storage objects by bypassing organization filters in Label Studio's storage URI resolution endpoints.

- **Severity:** High 8.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 3 Sep 2026
- **Updated:** 24 Sep 2026
- **Also known as:** GHSA-jhvx-775r-cm5m, MINI-p5hf-fhcp-r544

## What is CVE-2026-85211?

CVE-2026-85211 is a high-severity missing authorization vulnerability in HumanSignal label-studio, published on 3 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official 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.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2026-85211?


## How do I fix CVE-2026-85211?

Apply the vendor's patch.

## Is CVE-2026-85211 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-85211 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-85211 and fix it if it is affected.

What it is: CVE-2026-85211 is a high-severity missing authorization vulnerability in HumanSignal label-studio, published on 3 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-85211 exists.

Affected product: HumanSignal label-studio. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-85211/ (Markdown: https://insights.sbomify.com/CVE-2026-85211/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-85211
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-85211
- OSV: https://osv.dev/vulnerability/CVE-2026-85211

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-85211/
Summaries are generated and may contain mistakes; the official description above is the record.