{"id":"CVE-2021-43116","aliases":["GHSA-2g86-r6w2-wqqr"],"url":"https://o3.security/vulnerability/CVE-2021-43116","summary":"Use of Hard-coded Credentials in Nacos","details":"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.","published":"2022-07-05T14:15:08.767Z","modified":"2026-07-09T00:37:38.286077Z","cvss":{"score":8.8,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":3,"affectedPackages":[{"ecosystem":"Maven","name":"com.alibaba.nacos:nacos-client","fixedVersion":null}],"fix":null,"references":[{"type":"WEB","url":"http://packetstormsecurity.com/files/171638/Nacos-2.0.3-Access-Control.html"},{"type":"REPORT","url":"https://github.com/alibaba/nacos/issues/7127"},{"type":"REPORT","url":"https://github.com/alibaba/nacos/issues/7182"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T00:37:38.286077Z"}}