Label Studio through 1.23.0 Cross-Organization Storage URI Resolution

{
  "id": "d5296631f7d8fe13a97451a68bbbe665315e92502bd7c111920f483d75cddb27",
  "url": "https://osv.dev/vulnerability/CVE-2026-85211",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Label Studio through 1.23.0 Cross-Organization Storage URI Resolution",
    "summary": "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.",
    "evidence": "osv:CVE-2026-85211",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-85211",
      "aliases": [
        "CVE-2026-85211"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "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"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/humansignal/label-studio",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "2a9bfbcbf0a844b999de97e601d16050a893f5fb"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.23.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.23.0",
            "nightly",
            "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-2026-85211.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:33.787888164Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85211.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-85211",
        "https://www.vulncheck.com/advisories/label-studio-through-1.23.0-cross-organization-storage-uri-resolution",
        "https://github.com/HumanSignal/label-studio/issues/9924",
        "https://github.com/HumanSignal/label-studio",
        "https://github.com/HumanSignal/label-studio/blob/1.23.0/label_studio/io_storages/proxy_api.py"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-639"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85211.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-85211",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 501022,
  "published_at": "2026-09-03T14:12:22.489+00:00"
}