Security advisory

{
  "id": "8bfb1c51924db3b37ce86c142eed573d7d282d0c2130e3b597da09d96c596d03",
  "url": "https://osv.dev/vulnerability/CVE-2020-16162",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-16162",
    "summary": "An issue was discovered in RIPE NCC RPKI Validator 3.x through 3.1-2020.07.06.14.28. Missing validation checks on CRL presence or CRL staleness in the X509-based RPKI certificate-tree validation procedure allow remote attackers to bypass intended access restrictions by using revoked certificates. NOTE: there may be counterarguments related to backwards compatibility",
    "evidence": "osv:CVE-2020-16162",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-16162",
      "aliases": [
        "CVE-2020-16162"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/ripe-ncc/rpki-validator-3",
              "type": "GIT",
              "events": [
                {
                  "introduced": "04bf9f9e4f0fca781263959ada8434f205d8f3ce"
                },
                {
                  "last_affected": "306b5bdd9fc77e1075f0af2d4ca797947a6093e3"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:ripe:rpki_validator_3:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.0"
                      },
                      {
                        "last_affected": "3.1-2020.07.06.14.28"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-16162.json"
          }
        }
      ],
      "modified": "2026-10-20T10:51:59.066997788Z",
      "provider": "osv",
      "references": [
        "https://github.com/RIPE-NCC/rpki-validator-3/issues/162",
        "https://github.com/RIPE-NCC/rpki-validator-3/issues/232"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-16162",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 383185,
  "published_at": "2020-07-30T16:15:11.85+00:00"
}