CVEvulnerability
CVE-2026-58250
7.5 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2026-07-08
- Last modified
- 2026-10-25
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-476
Description
NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.12.8 and 2.11.17, an unauthenticated peer with network access to a leafnode listener with compression enabled could crash the server during the pre-authentication leafnode handshake by sending repeated leafnode INFO protocol messages before authentication and account setup completed. This issue is fixed in versions 2.12.8 and 2.11.17.
Affected configurations
• linuxfoundation nats-server (< 2.11.17)
• linuxfoundation nats-server (>= 2.12.0 < 2.12.8)
Related
Weakness · CWE (1)
- CWE-476 NULL Pointer Dereference weakness
References
- https://github.com/nats-io/nats-server/commit/8dcb26eaea78fdcbe96dbee5986d6019fd5cb94a Patch
- https://github.com/nats-io/nats-server/commit/fc5fe39177533e9dbdd651d2458285bfae1dde27 Patch
- https://github.com/nats-io/nats-server/releases/tag/v2.11.17 Release Notes
- https://github.com/nats-io/nats-server/releases/tag/v2.12.8 Release Notes
- https://github.com/nats-io/nats-server/security/advisories/GHSA-3g5q-cfh2-cq67 Vendor Advisory