{"action":"Upgrade github.com/nats-io/nats-server/v2 to 2.11.14 or later.","affected":[{"fixed":"2.11.14","introduced":"0"},{"fixed":"2.12.5","introduced":"2.12.0-RC.1"}],"component":"github.com/nats-io/nats-server/v2","cve_ids":["CVE-2026-29785"],"ecosystem":"Go","epss":0.01012,"exploited":false,"fixed_versions":["2.11.14","2.12.5"],"ghsa_id":"GHSA-52jh-2xxh-pwh6","id":"tcs_01M5KGGC0YRVFFSDHMY55DV695","modified_at":"2026-03-31T05:29:17.729448Z","published_at":"2026-03-26T20:33:05Z","references":["https://osv.dev/vulnerability/GO-2026-4829","https://github.com/nats-io/nats-server/security/advisories/GHSA-52jh-2xxh-pwh6","https://github.com/nats-io/nats-server/commit/a1488de6f2ba6e666aef0f9cce0016f7f167d6a8","https://advisories.nats.io/CVE/secnote-2026-04.txt"],"severity":{"label":"unknown"},"sources":[{"source":"osv","source_id":"GO-2026-4829#Go/github.com/nats-io/nats-server/v2","url":"https://osv.dev/vulnerability/GO-2026-4829"}],"summary":"NATS Server panic via malicious compression on leafnode port in github.com/nats-io/nats-server"}