PT-2026-56566

CVE-2026-58254

Published

2026-07-08

Updated

2026-07-14

Description by

CVSS 3.1

6.5

Medium

MetricsAV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions NATS Server versions prior to 2.14.3 NATS Server versions prior to 2.12.8

Description Message trace destination checks are not consistently applied to messages arriving through leafnode connections. This allows a leafnode operator to send trace events to subjects that are normally restricted and utilize trace-only behavior to block the standard delivery or storage of affected messages.

Recommendations Update NATS Server to version 2.14.3 or later. Update NATS Server to version 2.12.8 or later.

Exploitability

Exploit

Fix

Impacts

Researchers

Kodareef5

Vendors

Affected products

Weakness enumeration

CWE-863: Incorrect Authorization

Related identifiers