cve-2026-32327

{
  "cvss": 9.1,
  "datePublished": "2026-08-06T15:16:54.190",
  "dateUpdated": "2026-10-24T16:10:00.153",
  "description": "A bug in APR-util version 1.6.3 (and earlier) allows a stack recursion attack against any library consumer which parses XML from untrusted sources and uses the apr_xml_quote_elem() function.\n\nUsers are recommended to upgrade to version 1.6.4, which fixes this issue.",
  "id": "CVE-2026-32327",
  "raw": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "packageName": "APR-util",
            "product": "Apache Portable Runtime Utility",
            "vendor": "Apache Software Foundation",
            "versions": [
              {
                "lessThanOrEqual": "1.6.3",
                "status": "affected",
                "version": "0",
                "versionType": "semver"
              }
            ]
          }
        ],
        "source": "security@apache.org"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
            "cpeMatch": [
              {
                "criteria": "cpe:2.3:a:apache:apr-util:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "92873888-3F9F-45E0-930E-D06B5648DC2C",
                "versionEndExcluding": "1.6.4",
                "vulnerable": true
              }
            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "A bug in APR-util version 1.6.3 (and earlier) allows a stack recursion attack against any library consumer which parses XML from untrusted sources and uses the apr_xml_quote_elem() function.\n\nUsers are recommended to upgrade to version 1.6.4, which fixes this issue."
      },
      {
        "lang": "es",
        "value": "Un error en APR-util versión 1.6.3 (y anteriores) permite un ataque de recursión de pila contra cualquier consumidor de biblioteca que analiza XML de fuentes no confiables y utiliza la función apr_xml_quote_elem().\n\nSe recomienda a los usuarios actualizar a la versión 1.6.4, que corrige este problema."
      }
    ],
    "id": "CVE-2026-32327",
    "lastModified": "2026-10-24T16:10:00.153",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.1,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 5.2,
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "type": "Secondary"
        }
      ],
      "ssvcV203": [
        {
          "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "ssvcData": {
            "id": "CVE-2026-32327",
            "options": [
              {
                "exploitation": "none"
              },
              {
                "automatable": "yes"
              },
              {
                "technicalImpact": "partial"
              }
            ],
            "role": "CISA Coordinator",
            "timestamp": "2026-08-06T17:46:05.943190Z",
            "version": "2.0.3"
          }
        }
      ]
    },
    "published": "2026-08-06T15:16:54.190",
    "references": [
      {
        "source": "security@apache.org",
        "tags": [
          "Mailing List",
          "Vendor Advisory"
        ],
        "url": "https://lists.apache.org/thread/hq27vj8yfno9tkwv0fpj6jksfzgxvth1"
      },
      {
        "source": "af854a3a-2127-422b-91ae-364da2661108",
        "tags": [
          "Mailing List",
          "Third Party Advisory"
        ],
        "url": "http://www.openwall.com/lists/oss-security/2026/08/06/9"
      }
    ],
    "sourceIdentifier": "security@apache.org",
    "vulnStatus": "Analyzed",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "CWE-674"
          }
        ],
        "source": "security@apache.org",
        "type": "Secondary"
      }
    ]
  },
  "severity": "CRITICAL",
  "source": "nvd",
  "title": "A bug in APR-util version 1.6.3 (and earlier) allows a stack recursion attack against any library consumer which pars..."
}