CVE-2026-43513

{
  "id": "CVE-2026-43513",
  "sourceIdentifier": "[email protected]",
  "published": "2026-05-12T16:16:18.177",
  "lastModified": "2026-10-26T18:10:00.173",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper Handling of Case Sensitivity vulnerability in LockOutRealm in Apache Tomcat.\n\nThis issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117, from 8.5.0 through 8.5.100, from 7.0.0 through 7.0.109.\nOlder unsupported versions may also be affected.\n\nUsers are recommended to upgrade to version 11.0.22, 10.1.55 or 9.0.118 which fix the issue."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de manejo inadecuado de la sensibilidad a mayúsculas y minúsculas en LockOutRealm en Apache Tomcat.\n\nEste problema afecta a Apache Tomcat: desde 11.0.0-M1 hasta 11.0.21, desde 10.1.0-M1 hasta 10.1.54, desde 9.0.0.M1 hasta 9.0.117, desde 8.5.0 hasta 8.5.100, desde 7.0.0 hasta 7.0.109.\nVersiones antiguas no compatibles también pueden verse afectadas.\n\nSe recomienda a los usuarios actualizar a la versión 11.0.22, 10.1.55 o 9.0.118 que solucionan el problema."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Apache Software Foundation",
          "product": "Apache Tomcat",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "11.0.0-M1",
              "lessThanOrEqual": "11.0.21",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "10.1.0-M1",
              "lessThanOrEqual": "10.1.54",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "9.0.0.M1",
              "lessThanOrEqual": "9.0.117",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "8.5.0",
              "lessThanOrEqual": "8.5.100",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "7.0.0",
              "lessThanOrEqual": "7.0.109",
              "versionType": "semver",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "7.00",
              "versionType": "semver",
              "status": "unknown"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-05-14T16:34:43.121351Z",
          "id": "CVE-2026-43513",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-178"
        }
      ]
    }
  ],
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  "references": [
    {
      "url": "https://lists.apache.org/thread/ytjcgldshj73lcnd1sh95od5hrghwogp",
      "source": "[email protected]",
      "tags": [
        "Mailing List",
        "Vendor Advisory"
      ]
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2026/05/12/9",
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
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}