Go/github.com/nats-io/nats-server CVE-2026-27571: medium 5.9, EPSS 0.54%
nats-server websockets are vulnerable to pre-auth memory DoS
Action: No fix published. Pin and monitor.
Affected
| introduced | fixed | last affected |
|---|---|---|
| 0 | - | 1.4.1 |
Fixed versions
No fixed version in the source.
Sources
- osv: GHSA-qrvq-68c2-7grw#Go/github.com/nats-io/nats-server
- https://github.com/nats-io/nats-server/security/advisories/GHSA-qrvq-68c2-7grw
- https://nvd.nist.gov/vuln/detail/CVE-2026-27571
- https://github.com/nats-io/nats-server/commit/f77fb7c4535e6727cc1a2899cd8e6bbdd8ba2017
- https://github.com/nats-io/nats-server
- https://github.com/nats-io/nats-server/releases/tag/v2.11.12
- https://github.com/nats-io/nats-server/releases/tag/v2.12.3
- https://pkg.go.dev/vuln/GO-2026-4533
CVE-2026-27571 · published · modified · JSON