Security advisory

{
  "id": "76e6890dcb586626289d6217d22ea2d562a6b3f80957532773cba7e1837b5ee8",
  "url": "https://osv.dev/vulnerability/CVE-2026-31223",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-31223",
    "summary": "The snorkel library thru v0.10.0 contains a critical insecure deserialization vulnerability (CWE-502) in the BaseLabeler.load() method of the BaseLabeler class. The method loads serialized labeler models using the unsafe pickle.load() function on user-supplied file paths without any validation or security controls. Python's pickle module is inherently dangerous for deserializing untrusted data, as it can execute arbitrary code during the deserialization process. A remote attacker can exploit this by providing a maliciously crafted pickle file, leading to arbitrary code execution on the victim's system when the file is loaded via the vulnerable method.",
    "evidence": "osv:CVE-2026-31223",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-31223",
      "aliases": [
        "CVE-2026-31223",
        "GHSA-fq92-qc8f-482v",
        "PYSEC-2026-3069"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/snorkel-team/snorkel",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "9b642a212abec640a868ccc558fa3dbeb4c6a390"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:snorkel:snorkel:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.10.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.10.0",
            "v0.9.9",
            "v0.9.8",
            "v0.9.7",
            "v0.9.6",
            "v0.9.5",
            "v0.9.4",
            "v0.9.3",
            "v0.9.2",
            "v0.9.1",
            "v0.9.0",
            "v0.7.0-beta",
            "v0.6.3",
            "v0.6.2",
            "v0.6.1",
            "v0.6",
            "v0.5",
            "v0.4"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-31223.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:45.618197597Z",
      "provider": "osv",
      "references": [
        "https://www.notion.so/CVE-2026-31223-35d1e1393188811ab1d0e4a8a2e67992",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31223.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-31223",
        "https://github.com/snorkel-team/snorkel"
      ],
      "provider_metadata": {
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31223.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-31223",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 513848,
  "published_at": "2026-05-12T00:00:00+00:00"
}