{"action":"No fix published. Pin and monitor.","affected":[{"introduced":"0"}],"component":"github.com/nats-io/nats-server","cve_ids":["CVE-2026-33248"],"ecosystem":"Go","epss":0.00149,"exploited":false,"fixed_versions":[],"ghsa_id":"GHSA-3f24-pcvm-5jqc","id":"tcs_01M5KGGBH7W5Q0Z0J0TA5XE1SN","modified_at":"2026-03-27T18:26:05.115118Z","published_at":"2026-03-26T20:33:02Z","references":["https://osv.dev/vulnerability/GO-2026-4828","https://github.com/nats-io/nats-server/security/advisories/GHSA-3f24-pcvm-5jqc","https://advisories.nats.io/CVE/secnote-2026-13.txt"],"severity":{"label":"medium","score":4.2},"sources":[{"source":"osv","source_id":"GO-2026-4828","url":"https://osv.dev/vulnerability/GO-2026-4828"},{"source":"nvd","source_id":"CVE-2026-33248","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33248"}],"summary":"NATS has mTLS verify_and_map authentication bypass via incorrect Subject DN matching in github.com/nats-io/nats-server"}