Routinator incorrectly handles delta updates

{
  "id": "a12d3ac2f8f7cd91a3921b36645c3a09d34c40e92b409b1a2d889349121b3edf",
  "url": "https://www.cve.org/CVERecord?id=CVE-2026-72753",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Routinator incorrectly handles delta updates",
    "summary": "When Routinator encounters an RRDP notification file with gaps in the delta entries, it is still accepted and parsed, potentially leading to missing data. If it encounters too many delta entries it may run out of memory.",
    "evidence": "cve:CVE-2026-72753",
    "products": [
      {
        "name": {
          "value": "Routinator",
          "evidence": "/containers/cna/affected/0/product"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-72753",
      "aliases": [
        "CVE-2026-72753"
      ],
      "metrics": [
        {
          "format": "CVSS",
          "cvssV3_1": {
            "version": "3.1",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "affected": [
        {
          "vendor": "NLnet Labs",
          "product": "Routinator",
          "versions": [
            {
              "status": "unaffected",
              "version": "0.15.3",
              "lessThan": "*",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "affected"
        }
      ],
      "modified": "2026-10-26T17:57:34.197Z",
      "provider": "cve",
      "references": [
        "https://www.nlnetlabs.nl/downloads/routinator/CVE-2026-72753.txt"
      ],
      "provider_metadata": {
        "adp": [
          {
            "title": "CISA ADP Vulnrichment",
            "metrics": [
              {
                "other": {
                  "type": "ssvc",
                  "content": {
                    "id": "CVE-2026-72753",
                    "role": "CISA Coordinator",
                    "options": [
                      {
                        "Exploitation": "none"
                      },
                      {
                        "Automatable": "yes"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "version": "2.0.3",
                    "timestamp": "2026-10-26T17:47:09.649259Z"
                  }
                }
              }
            ],
            "providerMetadata": {
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP",
              "dateUpdated": "2026-10-26T17:57:34.197Z"
            }
          }
        ],
        "cna": {
          "orgId": "206fc3a0-e175-490b-9eaa-a5738056c9f6",
          "shortName": "NLnet Labs",
          "dateUpdated": "2026-10-26T17:06:25.709Z"
        }
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-72753",
        "evidence": "/cveMetadata/cveId"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/containers/cna/metrics"
  },
  "source_id": "core-cve",
  "document_id": 329077,
  "published_at": "2026-10-26T17:06:25.709+00:00"
}