{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.12.2"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "b745008c68c9e50ccb5acd537cb6f2453f8b7ad4"
            },
            {
              "fixed": "8e745c81b03fd477fe06322a7efabdce1ac28106"
            }
          ],
          "repo": "https://github.com/stanfordnlp/stanza",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-v5jw-96jm-7h2c"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-502",
      "CWE-676"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54499.json"
  },
  "details": "Stanza is a Stanford NLP Python library for tokenization, sentence segmentation, NER, and parsing of many human languages. Prior to 1.12.2, Stanza model loaders such as stanza.models.common.pretrain.Pretrain.load() attempt torch.load(..., weights_only=True) but fall back to torch.load(..., weights_only=False) on attacker-controllable pickle.UnpicklingError, allowing a malicious .pt pretrain or model file to execute arbitrary pickle code when a Stanza NLP pipeline loads it. This issue is fixed in version 1.12.2.",
  "id": "CVE-2026-54499",
  "modified": "2026-07-15T01:48:54.868971798Z",
  "published": "2026-07-08T22:23:02.664Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/stanfordnlp/stanza/releases/tag/v1.12.2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54499.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/stanfordnlp/stanza/security/advisories/GHSA-v5jw-96jm-7h2c"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54499"
    },
    {
      "type": "FIX",
      "url": "https://github.com/stanfordnlp/stanza/commit/b745008c68c9e50ccb5acd537cb6f2453f8b7ad4"
    },
    {
      "type": "FIX",
      "url": "https://github.com/stanfordnlp/stanza/pull/1587"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Stanza: Remote Code Execution via Unsafe Pickle Deserialization in Model Loaders"
}