CVE-2026-33248 NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system
Description
NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, when using mTLS for client identity, with `verify_and_map` to derive a NATS identity from the client certificate's Subject DN, certain patterns of RDN would not be correctly enforced, allowing for authentication bypass. This does require a valid certificate from a CA already trusted for client certificates, and `DN` naming patterns which the NATS maintainers consider highly unlikely. So this is an unlikely attack. Nonetheless, administrators who have been very sophisticated in their `DN` construction patterns might conceivably be impacted. Versions 2.11.15 and 2.12.6 contain a fix. As a workaround, developers should review their CA issuing practices.
Produits et versions touchés
| Produit | Versions touchées | Corrigé en |
|---|---|---|
| nats-server 2.12 | 2.12.0-RC.1 → < 2.12.6 | 2.12.6 |
| nats-server 2.11 | premières → < 2.11.15 | 2.11.15 |
Références
- github.com github.com
- advisories.nats.io advisories.nats.io
Chronologie
- Publiée
- Dernière modification