{"id":"CVE-2020-26892","aliases":["GHSA-2c64-vj8g-vwrq","GHSA-4w5x-x539-ppf5","GO-2022-0380"],"url":"https://o3.security/vulnerability/CVE-2020-26892","summary":"Incorrect handling of credential expiry by /nats-io/nats-server","details":"The JWT library in NATS nats-server before 2.1.9 has Incorrect Access Control because of how expired credentials are handled.","published":"2020-11-06T08:15:13.610Z","modified":"2026-07-08T05:58:44.996692199Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.02079,"percentile":0.79795,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/nats-io/nats-server/v2","fixedVersion":"2.1.9"}],"fix":null,"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VT67XCLIIBYRT762SVFBYFFTQFVSM3SI/"},{"type":"ADVISORY","url":"https://www.openwall.com/lists/oss-security/2020/11/02/2"},{"type":"FIX","url":"https://github.com/nats-io/nats-server/commits/master"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T05:58:44.996692199Z"}}