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CVE-2026-23634

Estado: AnalizadaMedia (4.3)—

Pepr is a type safe K8s middleware. Prior to 1.0.5 , Pepr defaults to a cluster-admin RBAC configuration and does not explicitly force or enforce least-privilege guidance for module authors. The default behavior exists to make the “getting started” experience smooth: new users can experiment with Pepr and create resources dynamically without needing to pre-configure RBAC. This vulnerability is fixed in 1.0.5.

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).

Tecnologías afectadas (1)

Defenseunicorns — Pepr

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-23634",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-23634",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-01-16T21:38:48.365212Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 0,
          "attackVector": "NETWORK",
          "baseSeverity": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 0,
        "exploitabilityScore": 3.9
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
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          "baseScore": 4.3,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 1.4,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "defenseunicorns",
          "product": "pepr",
          "versions": [
            {
              "status": "affected",
              "version": "< 1.0.5"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-01-16T20:15:49.733",
  "references": [
    {
      "url": "https://github.com/defenseunicorns/pepr/releases/tag/v1.0.5",
      "tags": [
        "Release Notes"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/defenseunicorns/pepr/security/advisories/GHSA-w54x-r83c-x79q",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-272"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Pepr is a type safe K8s middleware. Prior to 1.0.5 , Pepr defaults to a cluster-admin RBAC configuration and does not explicitly force or enforce least-privilege guidance for module authors. The default behavior exists to make the “getting started” experience smooth: new users can experiment with Pepr and create resources dynamically without needing to pre-configure RBAC. This vulnerability is fixed in 1.0.5."
    },
    {
      "lang": "es",
      "value": "Pepr es un middleware de K8s con seguridad de tipos. Antes de la versión 1.0.5, Pepr se configura por defecto con una configuración RBAC de cluster-admin y no fuerza ni impone explícitamente directrices de mínimo privilegio para los autores de módulos. Este comportamiento predeterminado existe para que la experiencia de 'primeros pasos' sea fluida: los nuevos usuarios pueden experimentar con Pepr y crear recursos dinámicamente sin necesidad de preconfigurar RBAC. Esta vulnerabilidad se corrige en la versión 1.0.5."
    }
  ],
  "lastModified": "2026-06-17T10:21:52.413",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:defenseunicorns:pepr:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DC7900DF-C37E-4D04-9745-4A3E414A3806",
              "versionEndExcluding": "1.0.5"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security-advisories@github.com"
}