picklescan - Remote Code Execution via operator.methodcaller Detection Bypass

{
  "id": "2280c462059d092ec7eb299e9a9b84d8faf93aabdac12a0f12d86e3b452937c5",
  "url": "https://osv.dev/vulnerability/CVE-2025-71373",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "picklescan - Remote Code Execution via operator.methodcaller Detection Bypass",
    "summary": "picklescan before 0.0.33 fails to detect operator.methodcaller function calls in pickle files, allowing attackers to bypass security checks. Remote attackers can craft malicious pickle payloads using operator.methodcaller that execute arbitrary code when loaded, compromising systems relying on picklescan for validation.",
    "evidence": "osv:CVE-2025-71373",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2025-71373",
      "aliases": [
        "CVE-2025-71373",
        "GHSA-x843-g5mx-g377"
      ],
      "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:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/mmaitre314/picklescan",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "70c1c6c31beb6baaf52c8db1b6c3c0e84a6f9dab"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.0.33"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "0.0.33"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.0.32",
            "v0.0.31",
            "v0.0.30",
            "v0.0.29",
            "v0.0.28",
            "v0.0.27",
            "v0.0.26",
            "v0.0.25",
            "v0.0.24",
            "v0.0.23",
            "v0.0.22",
            "v0.0.21",
            "v0.0.20",
            "v0.0.19",
            "v0.0.18",
            "v0.0.17",
            "v0.0.15",
            "v0.0.14",
            "v0.0.13",
            "v0.0.12",
            "v0.0.11",
            "v0.0.10",
            "v0.0.9",
            "v0.0.8",
            "v0.0.7",
            "v0.0.6",
            "v0.0.5",
            "v0.0.4",
            "v0.0.3",
            "v0.0.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-71373.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.423610521Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/71xxx/CVE-2025-71373.json",
        "https://github.com/mmaitre314/picklescan/security/advisories/GHSA-x843-g5mx-g377",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-71373",
        "https://www.vulncheck.com/advisories/picklescan-remote-code-execution-via-operator-methodcaller-detection-bypass"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-693"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/71xxx/CVE-2025-71373.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-71373",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 517918,
  "published_at": "2026-07-04T01:23:41.446+00:00"
}