{"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-2026-33246"],"ecosystem":"Go","epss":0.00248,"exploited":false,"fixed_versions":["2.11.15","2.12.6"],"ghsa_id":"GHSA-55h8-8g96-x4hj","id":"tcs_01M5KEXPVR099XKFZENQPBAC11","modified_at":"2026-09-10T03:50:59.829737231Z","published_at":"2026-03-24T21:50:25Z","references":["https://osv.dev/vulnerability/GHSA-55h8-8g96-x4hj","https://github.com/nats-io/nats-server/security/advisories/GHSA-55h8-8g96-x4hj","https://nvd.nist.gov/vuln/detail/CVE-2026-33246","https://advisories.nats.io/CVE/secnote-2026-08.txt","https://github.com/nats-io/nats-server"],"severity":{"label":"medium","score":6.4},"sources":[{"source":"osv","source_id":"GHSA-55h8-8g96-x4hj","url":"https://osv.dev/vulnerability/GHSA-55h8-8g96-x4hj"}],"summary":"NATS: Leafnode connections allow spoofing of Nats-Request-Info identity headers"}