{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "0"
                  },
                  {
                    "last_affected": "1.0.56"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              },
              {
                "range": [
                  {
                    "fixed": "31a64c1a4b5dfaf1e76a7164845e10f2d68248dc"
                  }
                ],
                "source": "REFERENCES_COMMIT"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0bfb8317bc4b4a5913d1aabcdb73f66b11c538fa"
            },
            {
              "fixed": "31a64c1a4b5dfaf1e76a7164845e10f2d68248dc"
            }
          ],
          "repo": "https://github.com/skyvern-ai/skyvern",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-184"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/123xxx/CVE-2026-123783.json"
  },
  "details": "Skyvern through 1.0.56 contains a sandbox bypass vulnerability that allows authenticated users to execute code by reconstructing functions from raw bytecode with types.CodeType. Attackers can deploy scripts that evade the is_safe_script_code AST denylist and import blocked modules such as subprocess or socket to run code in the Skyvern server process.",
  "id": "CVE-2026-123783",
  "modified": "2026-11-07T02:30:55.623903314Z",
  "published": "2026-11-06T15:00:59.895Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/123xxx/CVE-2026-123783.json"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/Skyvern-AI/skyvern"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/Skyvern-AI/skyvern/blob/v1.0.56/skyvern/forge/sdk/workflow/code_block_safety.py#L106-L142"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/Skyvern-AI/skyvern/blob/v1.0.56/skyvern/forge/sdk/workflow/service.py#L1509-L1511"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Skyvern-AI/skyvern/commit/31a64c1a4b5dfaf1e76a7164845e10f2d68248dc"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/Skyvern-AI/skyvern/issues/8927"
    },
    {
      "type": "FIX",
      "url": "https://github.com/Skyvern-AI/skyvern/pull/8937"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-123783"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/skyvern-through-1.0.56-script-sandbox-bypass-via-types-codetype-bytecode"
    }
  ],
  "schema_version": "1.9.2",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Skyvern through 1.0.56 Script Sandbox Bypass via types.CodeType Bytecode"
}