Label Studio through 1.23.0 SSRF via Unvalidated Webhook URL

{
  "id": "494d369d4d295f009a7326de2ec4de75266b821b3f556a66364507eaf8d7c4cf",
  "url": "https://osv.dev/vulnerability/CVE-2026-85179",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Label Studio through 1.23.0 SSRF via Unvalidated Webhook URL",
    "summary": "Label Studio through 1.23.0 fails to validate webhook URLs, allowing authenticated users to dispatch requests to internal services including RFC 1918 addresses and cloud metadata endpoints. Attackers can create webhooks targeting private networks and exfiltrate annotation data by enabling payload transmission in outbound requests.",
    "evidence": "osv:CVE-2026-85179",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-85179",
      "aliases": [
        "CVE-2026-85179"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/humansignal/label-studio",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "2c1c1d6472153032af8ed399168f814bea854e3e"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.23.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "2c1c1d6472153032af8ed399168f814bea854e3e"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "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-2026-85179.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.610823264Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85179.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-85179",
        "https://www.vulncheck.com/advisories/label-studio-through-1.23.0-ssrf-via-unvalidated-webhook-url",
        "https://github.com/HumanSignal/label-studio/issues/9801",
        "https://github.com/HumanSignal/label-studio/commit/2c1c1d6472153032af8ed399168f814bea854e3e",
        "https://github.com/HumanSignal/label-studio",
        "https://github.com/HumanSignal/label-studio/blob/1.23.0/label_studio/webhooks/utils.py"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-918"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/85xxx/CVE-2026-85179.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-85179",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 497679,
  "published_at": "2026-09-03T14:12:18.328+00:00"
}