{"schema_version":"1.3.1","id":"GO-2026-4533","modified":"2026-02-25T23:07:04Z","published":"2026-02-25T23:07:04Z","aliases":["CVE-2026-27571","GHSA-qrvq-68c2-7grw"],"summary":"nats-server websockets are vulnerable to pre-auth memory DoS in github.com/nats-io/nats-server","details":"nats-server websockets are vulnerable to pre-auth memory DoS in github.com/nats-io/nats-server","affected":[{"package":{"name":"github.com/nats-io/nats-server","ecosystem":"Go"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"}]}],"ecosystem_specific":{}},{"package":{"name":"github.com/nats-io/nats-server/v2","ecosystem":"Go"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.11.12"},{"introduced":"2.12.0-RC.1"},{"fixed":"2.12.3"}]}],"ecosystem_specific":{}}],"references":[{"type":"ADVISORY","url":"https://github.com/nats-io/nats-server/security/advisories/GHSA-qrvq-68c2-7grw"},{"type":"FIX","url":"https://github.com/nats-io/nats-server/commit/f77fb7c4535e6727cc1a2899cd8e6bbdd8ba2017"},{"type":"WEB","url":"https://github.com/nats-io/nats-server/releases/tag/v2.11.12"},{"type":"WEB","url":"https://github.com/nats-io/nats-server/releases/tag/v2.12.3"}],"database_specific":{"url":"https://pkg.go.dev/vuln/GO-2026-4533","review_status":"UNREVIEWED"}}