{"id":"UBUNTU-CVE-2020-26892","details":"The JWT library in NATS nats-server before 2.1.9 has Incorrect Access Control because of how expired credentials are handled.","modified":"2025-10-24T04:48:49Z","published":"2020-11-06T08:15:00Z","upstream":["CVE-2020-26892"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-26892"},{"type":"REPORT","url":"https://advisories.nats.io/CVE/CVE-2020-26892.txt"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-26892"},{"type":"REPORT","url":"https://github.com/nats-io/jwt/security/advisories/GHSA-4w5x-x539-ppf5"},{"type":"REPORT","url":"https://www.openwall.com/lists/oss-security/2020/11/02/2"},{"type":"REPORT","url":"https://github.com/nats-io/jwt/pull/109"}],"affected":[{"package":{"name":"golang-github-nats-io-jwt","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/golang-github-nats-io-jwt@0.0~git20181120.285cf2c-4?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20181120.285cf2c-4"],"ecosystem_specific":{"binaries":[{"binary_version":"0.0~git20181120.285cf2c-4","binary_name":"golang-github-nats-io-jwt-dev"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-26892.json"}},{"package":{"name":"golang-github-nats-io-jwt","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/golang-github-nats-io-jwt@0.0~git20181120.285cf2c-4.1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.0~git20181120.285cf2c-4.1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.0~git20181120.285cf2c-4.1","binary_name":"golang-github-nats-io-jwt-dev"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-26892.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"medium"}]}