CVE-2026-27889
HIGH7.5EPSS 0.09%NATS: Pre-auth remote server crash via WebSocket frame length overflow in wsRead
發布日:2026/3/25修改日:2026/4/28
描述
NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Starting in version 2.2.0 and prior to versions 2.11.14 and 2.12.5, a missing sanity check on a WebSockets frame could trigger a server panic in the nats-server. This happens before authentication, and so is exposed to anyone who can connect to the websockets port. Versions 2.11.14 and 2.12.5 contains a fix. A workaround is available. The vulnerability only affects deployments which use WebSockets and which expose the network port to untrusted end-points. If one is able to do so, a defense in depth of restricting either of these will mitigate the attack.
受影響套件(6)
- Bitnami/nats>= 2.2.0, < 2.11.14, >= 2.12.0, < 2.12.5
- Debian/nats-serverfrom 0
- Go/github.com/nats-io/nats-serverfrom 0
- Go/github.com/nats-io/nats-serverfrom 0
- Go/github.com/nats-io/nats-server/v2>= 2.2.0, < 2.11.14
- Go/github.com/nats-io/nats-server/v2>= 2.2.0, < 2.11.14, >= 2.12.0, < 2.12.5
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |