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

{
  "id": "9d1a54e870372dc3e1c27596ce5da5bb0fd03db5226df583b42c6fb1ee642720",
  "url": "https://osv.dev/vulnerability/CVE-2025-47783",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "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.",
    "evidence": "osv:CVE-2025-47783",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-47783",
      "aliases": [
        "CVE-2025-47783",
        "GHSA-8jhr-wpcm-hh4h",
        "PYSEC-2025-124"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "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"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/humansignal/label-studio",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "a5c4b5a5859076b370dedc6492237705d842e87f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.18.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "cpe": "cpe:2.3:a:humansignal:label_studio:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.18.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.4.1",
            "v1.4.0",
            "v1.3.0",
            "v1.2.0",
            "v1.1.1",
            "v1.1.0",
            "v1.0.2",
            "v1.0.1",
            "v1.0.0",
            "v0.9.1.post1",
            "v0.9.1.post0",
            "v0.9.0.post5",
            "v0.9.0.post4",
            "v0.9.0.post3",
            "v0.9.0",
            "v0.8.2",
            "v0.8.1",
            "v0.8.0",
            "v0.7.5.post0",
            "v0.7.3",
            "v0.7.2",
            "v0.7.1",
            "v0.7.0",
            "v0.6.1",
            "v0.6.0",
            "v0.5.1",
            "v0.4.8",
            "v0.4.7",
            "v0.4.6",
            "v0.4.5",
            "v0.4.4",
            "v0.4.0",
            "v0.3.0",
            "v0.2.2",
            "v.0.2.1-8",
            "v.0.2.1-5",
            "v.0.2.1-4",
            "v.0.2.1-3",
            "v.0.2.1-2",
            "v.0.2.0",
            "v.0.1.6",
            "v.0.1.5",
            "v.0.1.4",
            "v.0.1.2",
            "v.0.1.1",
            "v.0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-47783.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:45.824417993Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/47xxx/CVE-2025-47783.json",
        "https://github.com/HumanSignal/label-studio/security/advisories/GHSA-8jhr-wpcm-hh4h",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-47783"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-79"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/47xxx/CVE-2025-47783.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-47783",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 513693,
  "published_at": "2025-05-14T23:01:17.213+00:00"
}