{"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-2026-33218"],"ecosystem":"Go","epss":0.00877,"exploited":false,"fixed_versions":["2.11.15","2.12.6"],"ghsa_id":"GHSA-vprv-35vv-q339","id":"tcs_01M5KFPFPGSGKAJ9NJ1MA6DFVH","modified_at":"2026-09-10T03:51:00.740104527Z","published_at":"2026-03-24T21:45:29Z","references":["https://osv.dev/vulnerability/GHSA-vprv-35vv-q339","https://github.com/nats-io/nats-server/security/advisories/GHSA-vprv-35vv-q339","https://nvd.nist.gov/vuln/detail/CVE-2026-33218","https://advisories.nats.io/CVE/secnote-2026-10.txt","https://github.com/nats-io/nats-server"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-vprv-35vv-q339","url":"https://osv.dev/vulnerability/GHSA-vprv-35vv-q339"}],"summary":"NATS has pre-auth server panic via leafnode handling"}