BIT-nats-2026-27889
See a problem?- Import Source
- https://github.com/bitnami/vulndb/tree/main/data/nats/BIT-nats-2026-27889.json
- JSON Data
- https://api.osv.dev/v1/vulns/BIT-nats-2026-27889
- Aliases
- Published
- 2026-03-27T11:47:22.988Z
- Modified
- 2026-03-27T12:41:17.700301Z
- Summary
- NATS: Pre-auth remote server crash via WebSocket frame length overflow in wsRead
- Details
-
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.
- Database specific
{ "severity": "High", "cpes": [ "cpe:2.3:a:nats:nats_server:*:*:*:*:*:go:*:*" ] }- References
Affected packages
Bitnami / nats
Package
- Name
- nats
- Purl
- pkg:bitnami/nats
Severity
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator