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CVE-2026-25534

Estado: AplazadaCrítica (9.1)—

### Impact Spinnaker updated URL Validation logic on user input to provide sanitation on user inputted URLs for clouddriver. However, they missed that Java URL objects do not correctly handle underscores on parsing. This led to a bypass of the previous CVE (CVE-2025-61916) through the use of carefully crafted URLs. Note, Spinnaker found this not just in that CVE, but in the existing URL validations in Orca fromUrl expression handling. This CVE impacts BOTH artifacts as a result.

### Patches This has been merged and will be available in versions 2025.4.1, 2025.3.1, 2025.2.4 and 2026.0.0.

### Workarounds You can disable the various artifacts on this system to work around these limits.

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.

CWE-918 (SSRF) en servicios remotos Spinnaker con PR:L; bypass de validación URL permite proxy/redirección maliciosa. Acceso a datos e integridad comprometida (C:H, I:L).

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

Tecnologías afectadas (2)

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

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-25534",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-25534",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-17T17:48:58.716291Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 9.1,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.3,
        "exploitabilityScore": 3.1
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "io.spinnaker.clouddriver",
          "product": "clouddriver-artifacts",
          "versions": [
            {
              "status": "affected",
              "version": "< 2025.2.4"
            },
            {
              "status": "affected",
              "version": ">= 2025.3.0, < 2025.3.1"
            },
            {
              "status": "affected",
              "version": ">= 2025.4.0, < 2025.4.1"
            }
          ]
        },
        {
          "vendor": "io.spinnaker.orca",
          "product": "orca-core",
          "versions": [
            {
              "status": "affected",
              "version": "< 2025.2.4"
            },
            {
              "status": "affected",
              "version": ">= 2025.3.0, < 2025.3.1"
            },
            {
              "status": "affected",
              "version": ">= 2025.4.0, < 2025.4.1"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-03-17T18:16:15.063",
  "references": [
    {
      "url": "https://github.com/spinnaker/spinnaker/commit/7c4737906239a958a468e843239c6785b03d0eda",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/spinnaker/spinnaker/security/advisories/GHSA-8r8j-gfhg-fw38",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/spinnaker/spinnaker/security/advisories/GHSA-vrjc-q2fh-6x9h",
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "### Impact\nSpinnaker updated URL Validation logic on user input to provide sanitation on user inputted URLs for clouddriver.  However, they missed that Java URL objects do not correctly handle underscores on parsing.  This led to a bypass of the previous CVE (CVE-2025-61916) through the use of carefully crafted URLs.  Note, Spinnaker found this not just in that CVE, but in the existing URL validations in Orca fromUrl expression handling.  This CVE impacts BOTH artifacts as a result.   \n\n### Patches\nThis has been merged and will be available in versions 2025.4.1, 2025.3.1, 2025.2.4 and 2026.0.0.  \n\n### Workarounds\nYou can disable the various artifacts on this system to work around these limits."
    },
    {
      "lang": "es",
      "value": "### Impacto\nSpinnaker actualizó la lógica de validación de URL en la entrada del usuario para proporcionar saneamiento en las URL ingresadas por el usuario para clouddriver. Sin embargo, pasaron por alto que los objetos URL de Java no manejan correctamente los guiones bajos al analizar. Esto llevó a una omisión del CVE anterior (CVE-2025-61916) mediante el uso de URL cuidadosamente elaboradas. Tenga en cuenta que Spinnaker encontró esto no solo en ese CVE, sino en las validaciones de URL existentes en el manejo de expresiones fromUrl de Orca. Este CVE impacta AMBOS artefactos como resultado.\n\n### Parches\nEsto se ha fusionado y estará disponible en las versiones 2025.4.1, 2025.3.1, 2025.2.4 y 2026.0.0.\n\n### Soluciones provisionales\nPuede deshabilitar los diversos artefactos en este sistema para solucionar estas limitaciones."
    }
  ],
  "lastModified": "2026-06-17T10:24:48.563",
  "sourceIdentifier": "security-advisories@github.com"
}