FKIE_CVE-2026-41068

Vulnerability from fkie_nvd - Published: 2026-04-24 04:16 - Updated: 2026-04-24 17:16
Severity ?
7.7 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Summary
Kyverno is a policy engine designed for cloud native platform engineering teams. The patch for CVE-2026-22039 fixed cross-namespace privilege escalation in Kyverno's `apiCall` context by validating the `URLPath` field. However, the ConfigMap context loader has the identical vulnerability — the `configMap.namespace` field accepts any namespace with zero validation, allowing a namespace admin to read ConfigMaps from any namespace using Kyverno's privileged service account. This is a complete RBAC bypass in multi-tenant Kubernetes clusters. An updated fix is available in version 1.17.2.
References
security-advisories@github.comhttps://github.com/kyverno/kyverno/commit/bbf3e5c01391d612968440659028ae98e565a777
security-advisories@github.comhttps://github.com/kyverno/kyverno/security/advisories/GHSA-cvq5-hhx3-f99p
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/kyverno/kyverno/security/advisories/GHSA-cvq5-hhx3-f99p
Impacted products
Vendor Product Version
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Kyverno is a policy engine designed for cloud native platform engineering teams. The patch for CVE-2026-22039 fixed cross-namespace privilege escalation in Kyverno\u0027s `apiCall` context by validating the `URLPath` field. However, the ConfigMap context loader has the identical vulnerability \u2014 the `configMap.namespace` field accepts any namespace with zero validation, allowing a namespace admin to read ConfigMaps from any namespace using Kyverno\u0027s privileged service account. This is a complete RBAC bypass in multi-tenant Kubernetes clusters. An updated fix is available in version 1.17.2."
    }
  ],
  "id": "CVE-2026-41068",
  "lastModified": "2026-04-24T17:16:21.240",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.7,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 4.0,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-04-24T04:16:19.950",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/kyverno/kyverno/commit/bbf3e5c01391d612968440659028ae98e565a777"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/kyverno/kyverno/security/advisories/GHSA-cvq5-hhx3-f99p"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/kyverno/kyverno/security/advisories/GHSA-cvq5-hhx3-f99p"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Undergoing Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}


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