{"id":"CVE-2026-33222","aliases":["BIT-nats-2026-33222","GHSA-9983-vrx2-fg9c","GO-2026-4832"],"url":"https://o3.security/vulnerability/CVE-2026-33222","summary":"NATS JetStream has an authorization bypass through its Management API","details":"### Background\n\nNATS.io is a high performance open source pub-sub distributed communication technology, built for the cloud, on-premise, IoT, and edge computing.\n\nThe persistent storage feature, JetStream, has a management API which has many features, amongst which are backup and restore.\n\n### Problem Description\n\nUsers with JetStream admin API access to restore one stream could restore to other stream names, impacting data which should have been protected against them.\n\n### Affected Versions\n\nAny version before v2.12.6 or v2.11.15\n\n### Workarounds\n\nIf developers have configured users to have limited JetStream restore permissions, temporarily remove those permissions.","published":"2026-03-25T20:10:51.107Z","modified":"2026-08-12T03:51:43.847244823Z","cvss":{"score":4.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N"},"epss":{"score":0.00306,"percentile":0.23393,"asOf":"2026-09-16"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/nats-io/nats-server/v2","fixedVersion":"2.11.15"},{"ecosystem":"Go","name":"github.com/nats-io/nats-server/v2","fixedVersion":"2.12.6"},{"ecosystem":"Go","name":"github.com/nats-io/nats-server","fixedVersion":null}],"fix":null,"references":[{"type":"ADVISORY","url":"https://advisories.nats.io/CVE/secnote-2026-12.txt"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33222.json"},{"type":"ADVISORY","url":"https://github.com/nats-io/nats-server/security/advisories/GHSA-9983-vrx2-fg9c"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33222"},{"type":"PACKAGE","url":"https://github.com/nats-io/nats-server"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:43.847244823Z"}}