CVE-2026-14741

{
  "id": "CVE-2026-14741",
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "published": "2026-07-17T16:17:13.443",
  "lastModified": "2026-10-24T20:10:00.137",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "HTTP::Date versions before 6.08 for Perl allow CPU exhaustion via polynomial regex backtracking in parse_date.\n\nparse_date() matches the date string against a chain of alternative regexes, and str2time() delegates to it. Several of these patterns place unbounded quantifiers next to each other before a trailing `\\s*$` anchor. A valid date prefix followed by a long interior run of digits, letters, or whitespace and a single trailing byte that defeats the final match forces the engine to repartition the run, giving polynomial (about quadratic) backtracking. A header value of a few tens of kilobytes runs for tens of seconds of CPU.\n\nHTTP::Date parses timestamps such as HTTP `Date`, `Expires`, and `Last-Modified` headers, which commonly originate from untrusted sources. Any caller that passes an untrusted date header to str2time() or parse_date() can be driven to consume unbounded CPU, a denial of service."
    },
    {
      "lang": "es",
      "value": "Las versiones de HTTP::Date anteriores a la 6.08 para Perl permiten el agotamiento de la CPU a través de retroceso de expresiones regulares polinómico en parse_date.\n\nparse_date() compara la cadena de fecha con una cadena de expresiones regulares alternativas, y str2time() le delega. Varios de estos patrones colocan cuantificadores ilimitados uno al lado del otro antes de un ancla final ’\\s$’. Un prefijo de fecha válido seguido de una larga secuencia interna de dígitos, letras o espacios en blanco y un único byte final que anula la coincidencia final obliga al motor a reparticionar la secuencia, lo que produce un retroceso polinómico (aproximadamente cuadrático). Un valor de encabezado de unas pocas decenas de kilobytes se ejecuta durante decenas de segundos de CPU.\n\nHTTP::Date analiza marcas de tiempo como los encabezados HTTP ’Date’, ’Expires’ y ’Last-Modified’, que comúnmente se originan de fuentes no confiables. Cualquier llamador que pase un encabezado de fecha no confiable a str2time() o parse_date() puede ser llevado a consumir CPU ilimitada, una denegación de servicio."
    }
  ],
  "affected": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "affectedData": [
        {
          "vendor": "OALDERS",
          "product": "HTTP::Date",
          "defaultStatus": "unaffected",
          "collectionURL": "https://cpan.org/modules",
          "packageName": "HTTP-Date",
          "programFiles": [
            "lib/HTTP/Date.pm"
          ],
          "programRoutines": [
            {
              "name": "HTTP::Date::parse_date"
            },
            {
              "name": "HTTP::Date::str2time"
            }
          ],
          "repo": "https://github.com/libwww-perl/HTTP-Date",
          "versions": [
            {
              "version": "0",
              "lessThan": "6.08",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "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:N/I:N/A:H",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-08-12T18:47:05.416355Z",
          "id": "CVE-2026-14741",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-1333"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/libwww-perl/HTTP-Date/commit/78c20952cdfbf11e03cf1199ad70f13298a84c5c.patch",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "https://github.com/libwww-perl/HTTP-Date/pull/33",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "https://metacpan.org/release/OALDERS/HTTP-Date-6.08/changes",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2026/07/17/10",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ]
}