7.1

CVE-2026-58213

NATS Server: MQTT SUBSCRIBE Protocol Injection via Leaf Node/Route Forwarding allows arbitrary NATS command injection

NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.1 and 2.12.9, an MQTT client could include protocol control characters in subscription filters that were later forwarded as NATS protocol data to route or leafnode connections, corrupting the forwarded protocol stream and allowing injection of unintended NATS protocol operations. This issue is fixed in versions 2.14.1 and 2.12.9.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linuxfoundation ≫ Nats-server Version < 2.12.9
Linuxfoundation ≫ Nats-server Version >= 2.14.0 < 2.14.1
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.32% 0.247
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
security-advisories@github.com 7.1 2.8 4.2
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.

https://github.com/nats-io/nats-server/commit/366837cfc65ab9ccb4f98193c65e8daf238582d8
Patch
https://github.com/nats-io/nats-server/commit/64ebae40051ee497c481e10f316238faf0de1736
Patch
https://github.com/nats-io/nats-server/commit/f14856b9e57a36818f43851cb69b6e33670885c9
Patch
https://github.com/nats-io/nats-server/pull/8163
Patch
Issue Tracking
https://github.com/nats-io/nats-server/pull/8164
Patch
Issue Tracking
https://github.com/nats-io/nats-server/releases/tag/v2.12.9
Release Notes
https://github.com/nats-io/nats-server/releases/tag/v2.14.1
Release Notes
https://github.com/nats-io/nats-server/security/advisories/GHSA-qrcv-3558-gj4f
Vendor Advisory