{"id":"BIT-nats-2026-58251","summary":"NATS Server: Queue Subscribe Authz Bypass","details":"NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.0, 2.12.7, and 2.11.16, an authenticated user with subscription deny permissions could bypass a plain subject deny rule by using a queue subscription, because queue-specific deny evaluation could override the plain subject deny result when the queue name itself was not denied. This issue is fixed in versions 2.14.0, 2.12.7, and 2.11.16.","aliases":["CVE-2026-58251","GHSA-jx8g-9g95-6322"],"modified":"2026-09-29T10:00:05.953013958Z","published":"2026-07-14T15:47:17.003Z","database_specific":{"cpes":["cpe:2.3:a:nats:nats_server:*:*:*:*:*:*:*:*","cpe:2.3:a:nats:nats_server:*:*:*:*:*:go:*:*"],"severity":"Medium"},"references":[{"type":"FIX","url":"https://github.com/nats-io/nats-server/commit/013586288078def45a6788096924eb4d150db65c"},{"type":"FIX","url":"https://github.com/nats-io/nats-server/commit/79c2f6e9ff87f594596337b6427dda85c38d1fe1"},{"type":"FIX","url":"https://github.com/nats-io/nats-server/commit/b9ffb63b85e7db3d25a13b2e234f5f7f7c13164d"},{"type":"ARTICLE","url":"https://github.com/nats-io/nats-server/releases/tag/v2.11.16"},{"type":"ARTICLE","url":"https://github.com/nats-io/nats-server/releases/tag/v2.12.7"},{"type":"ARTICLE","url":"https://github.com/nats-io/nats-server/releases/tag/v2.14.0"},{"type":"ADVISORY","url":"https://github.com/nats-io/nats-server/security/advisories/GHSA-jx8g-9g95-6322"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58251"}],"affected":[{"package":{"name":"nats","ecosystem":"Bitnami","purl":"pkg:bitnami/nats"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.11.16"},{"introduced":"2.12.0"},{"fixed":"2.12.7"}]}],"database_specific":{"source":"https://github.com/bitnami/vulndb/tree/main/data/nats/BIT-nats-2026-58251.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"}]}],"schema_version":"1.9.0"}