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CVE-2026-58207

Estado: AnalizadaMedia (6.5)—

NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.3 and 2.12.12, a client able to send account-scoped connection monitoring requests could crash the server by supplying Connz pagination Offset and Limit values that overflowed internal arithmetic before the response window was safely bounded. This issue is fixed in versions 2.14.3 and 2.12.12.

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 (1)

Linuxfoundation — Nats-server

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-58207",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-58207",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-07-09T14:21:06.599044Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 7.7,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 4,
        "exploitabilityScore": 3.1
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
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          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
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      }
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  "published": "2026-07-08T21:16:52.293",
  "references": [
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      "url": "https://github.com/nats-io/nats-server/commit/2ae047139e37a38cb01e259a67909e7a39fa38e9",
      "tags": [
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      "url": "https://github.com/nats-io/nats-server/commit/894d9411927681d66ce349bf1afe49608dc0c1a3",
      "tags": [
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      "source": "security-advisories@github.com"
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    {
      "url": "https://github.com/nats-io/nats-server/releases/tag/v2.12.12",
      "tags": [
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      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/nats-io/nats-server/releases/tag/v2.14.3",
      "tags": [
        "Release Notes"
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    },
    {
      "url": "https://github.com/nats-io/nats-server/security/advisories/GHSA-q59r-vq66-pxc2",
      "tags": [
        "Mitigation",
        "Vendor Advisory"
      ],
      "source": "security-advisories@github.com"
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  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-190"
        }
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.3 and 2.12.12, a client able to send account-scoped connection monitoring requests could crash the server by supplying Connz pagination Offset and Limit values that overflowed internal arithmetic before the response window was safely bounded. This issue is fixed in versions 2.14.3 and 2.12.12."
    }
  ],
  "lastModified": "2026-07-09T19:13:49.360",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "matchCriteriaId": "410EBCA5-133B-48F5-BF7D-53F8BC020506",
              "versionEndExcluding": "2.12.12",
              "versionStartIncluding": "2.12.0"
            },
            {
              "criteria": "cpe:2.3:a:linuxfoundation:nats-server:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "9BF70729-64AF-4219-BC35-3C5C042F0595",
              "versionEndExcluding": "2.14.3",
              "versionStartIncluding": "2.14.0"
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          ],
          "operator": "OR"
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  ],
  "sourceIdentifier": "security-advisories@github.com"
}