Security advisory

{
  "id": "64f4e33cc91c1fc8c0f164854493480642c4276cbd890e28a8a251fd15a1b98d",
  "url": "https://osv.dev/vulnerability/CVE-2026-4789",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-4789",
    "summary": "Kyverno, versions 1.16.0 and later, are vulnerable to SSRF due to unrestricted CEL HTTP functions.",
    "evidence": "osv:CVE-2026-4789",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-4789",
      "aliases": [
        "BIT-kyverno-2026-4789",
        "CVE-2026-4789",
        "GHSA-rggm-jjmc-3394",
        "GO-2026-5621"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/kyverno/kyverno",
              "type": "GIT",
              "events": [
                {
                  "introduced": "18f9549cb2af30ec0537cd97f3200228d9f42d4b"
                },
                {
                  "last_affected": "18f9549cb2af30ec0537cd97f3200228d9f42d4b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "1.16.0"
                      },
                      {
                        "last_affected": "1.16.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "cpe": "cpe:2.3:a:kyverno:kyverno:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.16.0"
                      },
                      {
                        "last_affected": "1.17.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.16.0",
            "v1.16.0",
            "kyverno-policies-chart-3.6.0",
            "kyverno-chart-3.6.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-4789.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:51.726272935Z",
      "provider": "osv",
      "references": [
        "https://kb.cert.org/vuls/id/655822",
        "https://portswigger.net/web-security/ssrf",
        "https://www.kb.cert.org/vuls/id/655822",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4789.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-4789",
        "https://github.com/kyverno/kyverno"
      ],
      "provider_metadata": {
        "cna_assigner": "certcc",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4789.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-4789",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 520317,
  "published_at": "2026-03-30T20:44:00.607+00:00"
}