GO-2026-4831
NATS is vulnerable to pre-auth DoS through WebSockets client service in github.com/nats-io/nats-server
At a glance
- Published
- Updated
- CVE
- CVE-2026-33219
- Aliases
- BIT-nats-2026-33219, GHSA-8r68-gvr4-jh7j
Description
NATS is vulnerable to pre-auth DoS through WebSockets client service in github.com/nats-io/nats-server
Affected packages
| Package | Versions |
|---|---|
| Go · github.com/nats-io/nats-server | introduced 0 |
| Go · github.com/nats-io/nats-server/v2 | introduced 0, fixed 2.11.15, introduced 2.12.0-RC.1, fixed 2.12.6 |
References
- https://github.com/nats-io/nats-server/security/advisories/GHSA-8r68-gvr4-jh7j ADVISORY
- https://advisories.nats.io/CVE/secnote-2026-02.txt WEB
- https://advisories.nats.io/CVE/secnote-2026-11.txt WEB
- https://github.com/advisories/GHSA-qrvq-68c2-7grw WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — Go Vulnerability Database |