# CVE-2024-26152: Label Studio vulnerable to Cross-site Scripting if `<Choices>` or `<Labels>` are used in labeling config

Source: https://junglewise.ai/threats/cve-2024-26152-label-studio-vulnerable-to-cross-site-scripting-if-choices-or  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2024-02-22  
License: CC BY 4.0 with a link back

CVE-2024-26152 · Severity: low · CVSS 3.1 · Published 2024-02-22

### Summary
On all Label Studio versions prior to 1.11.0, data imported via file upload feature is not properly sanitized prior to being rendered within a [`Choices`](https://labelstud.io/tags/choices) or [`Labels`](https://labelstud.io/tags/labels) tag, resulting in an XSS vulnerability.

### Details
Need permission to use the "data import" function. This was reproduced on Label Studio 1.10.1.

### PoC

1. Create a project.
![Create a project](https://github.com/HumanSignal/label-studio/assets/3943358/9b1536ad-feac-4238-a1bd-ca9b1b798673)

2. Upload a file containing the payload using the "Upload Files" function.
![2  Upload a file containing the payload using the Upload Files function](https://github.com/HumanSignal/label-studio/assets/3943358/26bb7af1-1cd2-408f-9adf-61e31a5b7328)
![3  complete](https://github.com/HumanSignal/label-studio/assets/3943358/f2f62774-1fa6-4456-9e6f-8fa1ca0a2d2e)

The following are the contents of the files used in the PoC
```
{
  "data": {
    "prompt": "labelstudio universe image",
    "images": [
      {
        "value": "id123#0",
        "style": "margin: 5px",
        "html": "<img width='400' src='https://labelstud.io/_astro/images-tab.64279c16_ZaBSvC.avif' onload=alert(document.cookie)>"
      }
    ]
  }
}
```

3. Select the text-to-image generation labeling template of Ranking and scoring
![3  Select the text-to-image generation labelling template for Ranking and scoring](https://github.com/HumanSignal/label-studio/assets/3943358/f227f49c-a718-4738-bc2a-807da4f97155)
![5  save](https://github.com/HumanSignal/label-studio/assets/3943358/9b529f8a-8e99-4bb0-bdf6-bb7a95c9b75d)

4. Select a task
![4  Select a task](https://github.com/HumanSignal/label-studio/assets/3943358/71856b7a-2b1f-44ea-99ab-fc48bc20caa7)

5. Check that the script is running
![5  Check that the script is running](https://github.com/HumanSignal/label-studio/assets/3943358/e396ae7b-a591-4db7-afe9-5bab30b48cb9)

### Impact
Malicious scripts can be injected into the code, and when linked with vulnerabilities such as CSRF, it can cause even greater damage. In particular, It can become a source of further attacks, especially when linked to social engineering.

Technologies: [label-studio (PyPI)](https://junglewise.ai/threats/technologies/label-studio). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2024-26152 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2024-26152 being exploited in the wild.

**How severe is CVE-2024-26152?** Low severity, with a CVSS score of 3.1, published 22 February 2024.

**Which products and versions are affected?** label-studio (PyPI) ECOSYSTEM:introduced=0,fixed=1.11.0, GIT:introduced=0,fixed=5df9ae3828b98652e9fa290a19f4deedf51ef6c8|ECOSYSTEM:introduced=0,fixed=1.11.0.

**Is there a fix for CVE-2024-26152?** Yes. label-studio (PyPI): upgrade to 1.11.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2024-26152?** Check whether you run label-studio (PyPI) at an affected version. 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.

## How to fix

- label-studio (PyPI): upgrade to 1.11.0 or later

  ```sh
  pip install "label-studio>=1.11.0"
  ```


## Affected products

- label-studio (PyPI) ECOSYSTEM:introduced=0,fixed=1.11.0, GIT:introduced=0,fixed=5df9ae3828b98652e9fa290a19f4deedf51ef6c8|ECOSYSTEM:introduced=0,fixed=1.11.0

## Identifiers

- CVE-2024-26152
- GHSA-6xv9-957j-qfhg
- PYSEC-2024-249

## Related threats

- [Label Studio stored XSS in custom_hotkeys with account takeover](https://junglewise.ai/threats/cve-2026-22033-label-studio-stored-xss-in-custom-hotkeys-with-account-takeover)
- [PYSEC-2026-1503 - Label Studio allows Server-Side Request Forgery in the S3 Storage Endpoint](https://junglewise.ai/threats/cve-2025-25297-label-studio-allows-server-side-request-forgery-in-the-s3-storage)
- [PYSEC-2026-1504 - Label Studio allows Cross-Site Scripting (XSS) via GET request to `/projects/upload-example` endpoint](https://junglewise.ai/threats/cve-2025-25296-label-studio-allows-cross-site-scripting-xss-via-get-request-to)
- [HumanSignal Label Studio reflected XSS in label_config parameter](https://junglewise.ai/threats/cve-2025-47783-humansignal-label-studio-reflected-xss-in-label-config-parameter)
- [Label Studio SSRF on Import Bypassing `SSRF_PROTECTION_ENABLED` Protections](https://junglewise.ai/threats/cve-2023-47116-label-studio-ssrf-on-import-bypassing-ssrf-protection-enabled)