Security advisory

{
  "id": "63ae89f458f95abe79053f68f718450a33c78c9fcf814ae90a37fd3a09ff9c8b",
  "url": "https://osv.dev/vulnerability/CVE-2021-43116",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-43116",
    "summary": "An Access Control vulnerability exists in Nacos 2.0.3 in the access prompt page; enter username and password, click on login to capture packets and then change the returned package, which lets a malicious user login.",
    "evidence": "osv:CVE-2021-43116",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-43116",
      "aliases": [
        "CVE-2021-43116",
        "GHSA-2g86-r6w2-wqqr"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/alibaba/nacos",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "5a4d433970be9b8402f57e65bffa497027f21e30"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:alibaba:nacos:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "2.0.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.0.3",
            "2.0.2",
            "1.4.1",
            "1.3.2",
            "1.3.1",
            "1.3.0-beta",
            "1.0.1",
            "1.0.0",
            "1.0.0-RC3",
            "1.0.0-RC2",
            "1.0.0-RC1",
            "0.7.0",
            "0.3.0",
            "0.3.0-RC1",
            "0.2.1",
            "0.2.1-RC1",
            "v0.2.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-43116.json"
          }
        }
      ],
      "modified": "2026-10-20T10:55:01.833433753Z",
      "provider": "osv",
      "references": [
        "https://github.com/alibaba/nacos/issues/7127",
        "https://github.com/alibaba/nacos/issues/7182"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-43116",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386724,
  "published_at": "2022-07-05T14:15:08.767+00:00"
}