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CVE-2023-40518

Estado: ModificadaAlta (7.5)—

LiteSpeed OpenLiteSpeed before 1.7.18 does not strictly validate HTTP request headers.

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)

Litespeedtech — Openlitespeed

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2023-40518",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
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        "ssvcData": {
          "id": "CVE-2023-40518",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-10-09T15:46:37.683534Z"
        }
      }
    ],
    "cvssMetricV31": [
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        "cvssData": {
          "scope": "UNCHANGED",
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          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
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  ],
  "published": "2023-08-14T22:15:14.327",
  "references": [
    {
      "url": "https://openlitespeed.org/release-log/version-1-7-x/",
      "tags": [
        "Release Notes"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://www.litespeedtech.com/products/litespeed-web-server/release-log",
      "tags": [
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      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://openlitespeed.org/release-log/version-1-7-x/",
      "tags": [
        "Release Notes"
      ],
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    },
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      "tags": [
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      ],
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    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "LiteSpeed OpenLiteSpeed before 1.7.18 does not strictly validate HTTP request headers."
    }
  ],
  "lastModified": "2026-06-17T06:18:17.707",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:litespeedtech:openlitespeed:*:*:*:*:*:*:*:*",
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              "matchCriteriaId": "167DAFC3-54C7-448A-A205-86FA8EB0EE09",
              "versionEndExcluding": "1.7.18"
            }
          ],
          "operator": "OR"
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      ]
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  ],
  "sourceIdentifier": "cve@mitre.org"
}