FKIE_CVE-2026-4789

Vulnerability from fkie_nvd - Published: 2026-03-30 21:17 - Updated: 2026-04-03 18:17
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
Kyverno, versions 1.16.0 and later, are vulnerable to SSRF due to unrestricted CEL HTTP functions.
References
cret@cert.orghttps://github.com/kyverno/kyvernoProduct
cret@cert.orghttps://kb.cert.org/vuls/id/655822Third Party Advisory
cret@cert.orghttps://portswigger.net/web-security/ssrfTechnical Description
af854a3a-2127-422b-91ae-364da2661108https://www.kb.cert.org/vuls/id/655822Third Party Advisory
Impacted products
Vendor Product Version
kyverno kyverno *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:kyverno:kyverno:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "F2E0715F-61DE-45F5-840E-06CF5C468D33",
              "versionEndIncluding": "1.17.1",
              "versionStartIncluding": "1.16.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Kyverno, versions 1.16.0 and later, are vulnerable to SSRF due to unrestricted CEL HTTP functions."
    },
    {
      "lang": "es",
      "value": "Kyverno, versiones 1.16.0 y posteriores, son vulnerables a SSRF debido a funciones HTTP CEL sin restricciones."
    }
  ],
  "id": "CVE-2026-4789",
  "lastModified": "2026-04-03T18:17:51.837",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-30T21:17:10.843",
  "references": [
    {
      "source": "cret@cert.org",
      "tags": [
        "Product"
      ],
      "url": "https://github.com/kyverno/kyverno"
    },
    {
      "source": "cret@cert.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://kb.cert.org/vuls/id/655822"
    },
    {
      "source": "cret@cert.org",
      "tags": [
        "Technical Description"
      ],
      "url": "https://portswigger.net/web-security/ssrf"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.kb.cert.org/vuls/id/655822"
    }
  ],
  "sourceIdentifier": "cret@cert.org",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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