CVE-2024-26152: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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 or 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.

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2. Upload a file containing the payload using the “Upload Files” function.

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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

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4. Select a task

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5. Check that the script is running

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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.