CVE-2026-44889

{
  "id": "CVE-2026-44889",
  "sourceIdentifier": "[email protected]",
  "published": "2026-06-22T22:16:46.350",
  "lastModified": "2026-10-25T23:10:00.167",
  "vulnStatus": "Analyzed",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "WebOb provides objects for HTTP requests and responses. Prior to 1.8.10, the normalization of the HTTP Location header during a redirect is vulnerable to an open redirect: WebOb joins the redirect target to the request URI using Python's urljoin, and since Python 3.10 the underlying urlsplit strips ASCII tab, carriage return, and newline characters before parsing, so a redirect target containing such characters can be reinterpreted as a protocol-relative URL whose authority is an attacker-controlled host. This bypasses the CVE-2024-42353 fix that escaped a leading double slash, allowing an attacker who influences the redirect location to send users to an arbitrary external site instead of the intended one. This vulnerability is fixed in 1.8.10."
    },
    {
      "lang": "es",
      "value": "WebOb proporciona objetos para solicitudes y respuestas HTTP. Antes de la versión 1.8.10, la normalización del encabezado HTTP Location durante una redirección es vulnerable a una redirección abierta: WebOb une el objetivo de la redirección a la URI de la solicitud usando urljoin de Python, y desde Python 3.10 el urlsplit subyacente elimina los caracteres ASCII de tabulación, retorno de carro y nueva línea antes del análisis, por lo que un objetivo de redirección que contenga dichos caracteres puede ser reinterpretado como una URL relativa al protocolo cuya autoridad es un host controlado por un atacante. Esto elude la corrección de CVE-2024-42353 que escapaba una doble barra inicial, permitiendo a un atacante que influye en la ubicación de la redirección enviar a los usuarios a un sitio externo arbitrario en lugar del previsto. Esta vulnerabilidad se corrige en la versión 1.8.10."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "Pylons",
          "product": "webob",
          "versions": [
            {
              "version": "< 1.8.10",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "CHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.7
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-06-23T14:58:48.576241Z",
          "id": "CVE-2026-44889",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-601"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:pylonsproject:webob:*:*:*:*:*:*:*:*",
              "versionEndExcluding": "1.8.10",
              "matchCriteriaId": "651738A5-12CA-4A99-A8D4-91AFDA2EE7E3"
            }
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  ],
  "references": [
    {
      "url": "https://github.com/Pylons/webob/security/advisories/GHSA-fh3h-vg37-cc95",
      "source": "[email protected]",
      "tags": [
        "Mitigation",
        "Vendor Advisory"
      ]
    }
  ]
}