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CVE-2026-9658

Estado: AplazadaAlta (7.3)—

Plack::Middleware::Security::Common versions before 0.13.1 for Perl did not block header injections in request paths.

The header injection rule was ineffective at blocking header injections in the request paths unless they were double-encoded, for example,

Note that it is unclear whether request paths with CRLF followed by additional headers would be blocked by reverse proxies, or how they would be processed by Plack-based servers.

Detalles técnicos trazas, registros y código del informe original
  GET /path\r\nHTTP/1.1\r\nHost: secret.example.com

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Vector CVSS AV:N/AC:L/PR:N indica red sin autenticación. CWE-113 (HTTP response splitting) + fallo en validación de headers permite inyección CRLF en rutas de petición. Potencial secuestro de sesión o hijacking de flujo HTTP.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Privileged Account ManagementNetwork SegmentationVulnerability ScanningUser Account ManagementPassword PoliciesMulti-factor Authentication

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Plack — Middleware Security CommonAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-9658",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-9658",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-06-01T18:00:08.268723Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.3,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
        },
        "impactScore": 3.4,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "affectedData": [
        {
          "repo": "https://github.com/robrwo/Plack-Middleware-Security-Simple",
          "vendor": "RRWO",
          "product": "Plack::Middleware::Security::Common",
          "versions": [
            {
              "status": "affected",
              "version": "0",
              "lessThan": "0.13.1",
              "versionType": "custom"
            }
          ],
          "packageName": "Plack-Middleware-Security-Simple",
          "programFiles": [
            "lib/Plack/Middleware/Security/Common.pm"
          ],
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "programRoutines": [
            {
              "name": "Plack::Middleware::Security::Common::header_injection"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-05-28T13:16:25.067",
  "references": [
    {
      "url": "https://metacpan.org/release/RRWO/Plack-Middleware-Security-Simple-v0.13.1/changes",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "http://www.openwall.com/lists/oss-security/2026/05/28/9",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "description": [
        {
          "lang": "en",
          "value": "CWE-113"
        },
        {
          "lang": "en",
          "value": "CWE-790"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Plack::Middleware::Security::Common versions before 0.13.1 for Perl did not block header injections in request paths.\n\nThe header injection rule was ineffective at blocking header injections in the request paths unless they were double-encoded, for example,\n\n  GET /path\\r\\nHTTP/1.1\\r\\nHost: secret.example.com\n\nNote that it is unclear whether request paths with CRLF followed by additional headers would be blocked by reverse proxies, or how they would be processed by Plack-based servers."
    }
  ],
  "lastModified": "2026-06-17T11:05:34.307",
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
}