FKIE_CVE-2026-23881

Vulnerability from fkie_nvd - Published: 2026-01-27 17:16 - Updated: 2026-02-02 15:20
Severity ?
7.7 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
Kyverno is a policy engine designed for cloud native platform engineering teams. Versions prior to 1.16.3 and 1.15.3 have unbounded memory consumption in Kyverno's policy engine that allows users with policy creation privileges to cause denial of service by crafting policies that exponentially amplify string data through context variables. Versions 1.16.3 and 1.15.3 contain a patch for the vulnerability.
References
security-advisories@github.comhttps://github.com/kyverno/kyverno/commit/7a651be3a8c78dcabfbf4178b8d89026bf3b850fPatch
security-advisories@github.comhttps://github.com/kyverno/kyverno/commit/f5617f60920568a301740485472bf704892175b7Patch
security-advisories@github.comhttps://github.com/kyverno/kyverno/security/advisories/GHSA-r2rj-wwm5-x6mqExploit, Mitigation, Vendor Advisory
Impacted products
Vendor Product Version
kyverno kyverno *
kyverno kyverno *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:kyverno:kyverno:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "EC83E83A-2BA5-4A52-AF06-06E67CA03749",
              "versionEndExcluding": "1.15.3",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:kyverno:kyverno:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "AFFC15A4-197B-44FB-985A-BDDE22679655",
              "versionEndExcluding": "1.16.3",
              "versionStartIncluding": "1.16.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Kyverno is a policy engine designed for cloud native platform engineering teams. Versions prior to 1.16.3 and 1.15.3 have unbounded memory consumption in Kyverno\u0027s policy engine that allows users with policy creation privileges to cause denial of service by crafting policies that exponentially amplify string data through context variables. Versions 1.16.3 and 1.15.3 contain a patch for the vulnerability."
    },
    {
      "lang": "es",
      "value": "Kyverno es un motor de pol\u00edticas dise\u00f1ado para equipos de ingenier\u00eda de plataformas nativas de la nube. Las versiones anteriores a la 1.16.3 y 1.15.3 tienen un consumo de memoria ilimitado en el motor de pol\u00edticas de Kyverno que permite a los usuarios con privilegios de creaci\u00f3n de pol\u00edticas causar una denegaci\u00f3n de servicio mediante la elaboraci\u00f3n de pol\u00edticas que amplifican exponencialmente los datos de cadena a trav\u00e9s de variables de contexto. Las versiones 1.16.3 y 1.15.3 contienen un parche para la vulnerabilidad."
    }
  ],
  "id": "CVE-2026-23881",
  "lastModified": "2026-02-02T15:20:13.000",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.7,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 4.0,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-01-27T17:16:12.733",
  "references": [
    {
      "source": "security-advisories@github.com",
      "tags": [
        "Patch"
      ],
      "url": "https://github.com/kyverno/kyverno/commit/7a651be3a8c78dcabfbf4178b8d89026bf3b850f"
    },
    {
      "source": "security-advisories@github.com",
      "tags": [
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    },
    {
      "source": "security-advisories@github.com",
      "tags": [
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        "Mitigation",
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      "url": "https://github.com/kyverno/kyverno/security/advisories/GHSA-r2rj-wwm5-x6mq"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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