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CVE-2026-19135

Estado: Pendiente de análisisMedia (5.4)—

A JEXL expression sandbox bypass exists in multiple versions of OpenNMS Meridian and Horizon. A low-privileged authenticated user can submit a crafted expression to the Measurements REST API that escapes the sandbox and loads arbitrary Java classes on the server. This can potentially allow an attacker to gain access to confidential information and compromise integrity.

The solution is to upgrade to Meridian 2024.3.12, 2025.0.9 and Horizon 36.0.3 or newer. Meridian and Horizon installation instructions state that they are intended for installation within an organization's private networks and should not be directly accessible from the Internet.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (2)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Opennms — HorizonAIOpennms — MeridianAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-19135",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-19135",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-08-13T13:02:12.787202Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security@opennms.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.4,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 2.5,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@opennms.com",
      "affectedData": [
        {
          "repo": "https://github.com/OpenNMS",
          "vendor": "The OpenNMS Group",
          "product": "Meridian",
          "versions": [
            {
              "status": "affected",
              "version": "2024.1.0",
              "lessThan": "2024.3.12",
              "versionType": "maven"
            },
            {
              "status": "affected",
              "version": "2025.0.0",
              "lessThan": "2025.0.9",
              "versionType": "maven"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://github.com/OpenNMS",
          "vendor": "The OpenNMS Group",
          "product": "Horizon",
          "versions": [
            {
              "status": "affected",
              "version": "36.0.0",
              "lessThan": "36.0.3",
              "versionType": "maven"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-08-13T05:17:22.750",
  "references": [
    {
      "url": "https://github.com/OpenNMS/opennms/pull/8754",
      "source": "security@opennms.com"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@opennms.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-470"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A JEXL expression sandbox bypass exists in multiple versions of OpenNMS Meridian and Horizon. A low-privileged authenticated user can submit a crafted expression to the Measurements REST API that escapes the sandbox and loads arbitrary Java classes on the server. This can potentially allow an attacker to gain access to confidential information and compromise integrity.\n\nThe solution is to upgrade to Meridian 2024.3.12, 2025.0.9 and Horizon 36.0.3 or newer. Meridian and Horizon installation instructions state that they are intended for installation within an organization's private networks and should not be directly accessible from the Internet."
    }
  ],
  "lastModified": "2026-09-08T19:20:25.117",
  "sourceIdentifier": "security@opennms.com"
}