« Volver al listado

CVE-2026-29045

Estado: AnalizadaCrítica (9.8)—

Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.12.4, when using serveStatic together with route-based middleware protections (e.g. app.use('/admin/*', ...)), inconsistent URL decoding allowed protected static resources to be accessed without authorization. The router used decodeURI, while serveStatic used decodeURIComponent. This mismatch allowed paths containing encoded slashes (%2F) to bypass middleware protections while still resolving to the intended filesystem path. This issue has been patched in version 4.12.4.

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:N (red, sin autenticación) + inconsistencia en decodificación de URL que permite bypass de middleware → acceso no autorizado a recursos estáticos protegidos (T1005). La escalada de acceso (T1548) es secundaria dado que el bypass permite acceder como si tuviera permisos sin poseerlos.

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 ManagementUpdate SoftwareVulnerability ScanningUser Account ManagementRestrict File and Directory PermissionsOperating System Configuration

Tecnologías afectadas (1)

Hono — Hono

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-29045",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-29045",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-05T15:39:29.390771Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "honojs",
          "product": "hono",
          "versions": [
            {
              "status": "affected",
              "version": "< 4.12.4"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-03-04T23:16:10.247",
  "references": [
    {
      "url": "https://github.com/honojs/hono/commit/6a0607a929d888893f0c91d92dce2fcfdb3662a3",
      "tags": [
        "Patch"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/honojs/hono/security/advisories/GHSA-q5qw-h33p-qvwr",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-177"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Hono is a Web application framework that provides support for any JavaScript runtime. Prior to version 4.12.4, when using serveStatic together with route-based middleware protections (e.g. app.use('/admin/*', ...)), inconsistent URL decoding allowed protected static resources to be accessed without authorization. The router used decodeURI, while serveStatic used decodeURIComponent. This mismatch allowed paths containing encoded slashes (%2F) to bypass middleware protections while still resolving to the intended filesystem path. This issue has been patched in version 4.12.4."
    },
    {
      "lang": "es",
      "value": "Hono es un framework de aplicación web que proporciona soporte para cualquier tiempo de ejecución de JavaScript. Antes de la versión 4.12.4, cuando se usaba serveStatic junto con protecciones de middleware basadas en rutas (p. ej., app.use('/admin/*', ...)), una decodificación inconsistente de URL permitía que se accediera a recursos estáticos protegidos sin autorización. El router usaba decodeURI, mientras que serveStatic usaba decodeURIComponent. Esta discrepancia permitía que las rutas que contenían barras codificadas (%2F) eludieran las protecciones de middleware mientras seguían resolviéndose a la ruta de sistema de archivos prevista. Este problema ha sido parcheado en la versión 4.12.4."
    }
  ],
  "lastModified": "2026-06-17T10:29:30.013",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:hono:hono:*:*:*:*:*:node.js:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8ADA9966-4575-41CC-8905-E1F4E4CB5CA6",
              "versionEndExcluding": "4.12.4"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security-advisories@github.com"
}