CVE-2026-58252

{
  "id": "CVE-2026-58252",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-08T20:16:54.793",
  "lastModified": "2026-10-25T17:10:00.197",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.0, 2.12.7, and 2.11.16, an authenticated user could receive messages on denied subjects when a wildcard subscription overlapped with a configured wildcard deny rule but was not a subset of it, and queue subscriptions could also affect delivery to legitimate queue consumers. This issue is fixed in versions 2.14.0, 2.12.7, and 2.11.16."
    },
    {
      "lang": "es",
      "value": "NATS Server es un servidor de alto rendimiento para NATS.io, el sistema de mensajería nativo de la nube y del borde. Antes de las versiones 2.14.0, 2.12.7 y 2.11.16, un usuario autenticado podía recibir mensajes en temas denegados cuando una suscripción con comodín se superponía con una regla de denegación de comodín configurada pero no era un subconjunto de ella, y las suscripciones de cola también podían afectar la entrega a consumidores de cola legítimos. Este problema está solucionado en las versiones 2.14.0, 2.12.7 y 2.11.16."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "nats-io",
          "product": "nats-server",
          "versions": [
            {
              "version": "< 2.11.16",
              "status": "affected"
            },
            {
              "version": ">= 2.12.0-preview.1, < 2.12.7",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-09T13:34:18.644909Z",
          "id": "CVE-2026-58252",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-285"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:linuxfoundation:nats-server:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "2.11.16",
              "matchCriteriaId": "64D69F6E-293C-4D5F-92F6-8479213F7727"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:linuxfoundation:nats-server:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "2.12.0",
              "versionEndExcluding": "2.12.7",
              "matchCriteriaId": "DEE2D11B-BD56-4479-A5EB-79F352DA68AB"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/nats-io/nats-server/commit/8ced85a11497f86704a95d960281480ce037386b",
      "source": "[email protected]",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/nats-io/nats-server/commit/a42a6d1e258eb5c3a2190384d31965a4b715e854",
      "source": "[email protected]",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/nats-io/nats-server/commit/e611ca9604697b02d8f22beb76037400a9cf72e6",
      "source": "[email protected]",
      "tags": [
        "Patch"
      ]
    },
    {
      "url": "https://github.com/nats-io/nats-server/releases/tag/v2.11.16",
      "source": "[email protected]",
      "tags": [
        "Release Notes"
      ]
    },
    {
      "url": "https://github.com/nats-io/nats-server/releases/tag/v2.12.7",
      "source": "[email protected]",
      "tags": [
        "Release Notes"
      ]
    },
    {
      "url": "https://github.com/nats-io/nats-server/releases/tag/v2.14.0",
      "source": "[email protected]",
      "tags": [
        "Release Notes"
      ]
    },
    {
      "url": "https://github.com/nats-io/nats-server/security/advisories/GHSA-wh7g-5m82-pmhr",
      "source": "[email protected]",
      "tags": [
        "Vendor Advisory"
      ]
    }
  ]
}