{"action":"Upgrade github.com/nats-io/nats-server/v2 to 2.11.15 or later.","affected":[{"fixed":"2.11.15","introduced":"0"},{"fixed":"2.12.6","introduced":"2.12.0-RC.1"}],"component":"github.com/nats-io/nats-server/v2","cve_ids":["CVE-2026-33217"],"ecosystem":"Go","epss":0.00264,"exploited":false,"fixed_versions":["2.11.15","2.12.6"],"ghsa_id":"GHSA-jxxm-27vp-c3m5","id":"tcs_01M5KFEYN7W0Y5M87XVDZB7BHK","modified_at":"2026-09-10T03:51:00.416516974Z","published_at":"2026-03-24T21:44:17Z","references":["https://osv.dev/vulnerability/GHSA-jxxm-27vp-c3m5","https://github.com/nats-io/nats-server/security/advisories/GHSA-jxxm-27vp-c3m5","https://nvd.nist.gov/vuln/detail/CVE-2026-33217","https://advisories.nats.io/CVE/secnote-2026-07.txt","https://github.com/nats-io/nats-server"],"severity":{"label":"high","score":7.1},"sources":[{"source":"osv","source_id":"GHSA-jxxm-27vp-c3m5","url":"https://osv.dev/vulnerability/GHSA-jxxm-27vp-c3m5"}],"summary":"NATS allows MQTT clients to bypass ACL checks"}