{
  "id": "CVE-2026-74899",
  "url": "https://spydr.io/cve/CVE-2026-74899",
  "published": "2026-08-17T11:16:44.917Z",
  "modified": "2026-08-28T18:34:48.753Z",
  "score": 9.3,
  "severity": "critical",
  "cvss_version": "4.0",
  "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
  "score_source": "vulncheck.com",
  "epss": 0.0075,
  "epss_percentile": 0.53369,
  "exploited": false,
  "kev": null,
  "ssvc_exploitation": "poc",
  "vendors": [
    "jahlives"
  ],
  "products": [
    "jahlives openssl_encrypt"
  ],
  "cwes": [
    "CWE-95"
  ],
  "description": "openssl_encrypt versions before 1.4.0 contain a sandbox escape vulnerability in IsolatedPluginExecutor that exposes Python type objects in restricted exec() builtins. Attackers can traverse the Python class hierarchy via __class__.__mro__.__subclasses__() to access system functions and execute arbitrary OS commands.",
  "status": "Analyzed",
  "score_type": "Secondary",
  "scores": {
    "cvss_v40": 9.3,
    "cvss_v31": 9.8,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-m25m-ggxg-239c",
      "tags": [
        "Exploit",
        "Mitigation",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://www.vulncheck.com/advisories/openssl-encrypt-before-sandbox-escape-via-type-hierarchy",
      "tags": [
        "Third Party Advisory"
      ]
    },
    {
      "url": "https://github.com/siyuan-note/siyuan/security/advisories/GHSA-43jx-gxq4-jpjc",
      "tags": [
        "Not Applicable"
      ]
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-74899",
  "covered_in": [],
  "attribution": [
    {
      "source": "NVD",
      "url": "https://nvd.nist.gov",
      "notice": "This product uses data from the NVD API but is not endorsed or certified by the NVD."
    },
    {
      "source": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "notice": "Known exploited vulnerabilities from the CISA KEV catalog."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss",
      "notice": "Exploit prediction scores from FIRST EPSS."
    }
  ]
}