Invocation of Process Using Visible Sensitive Information in nats-server - #VU166198
Published: November 13, 2026
Vulnerability identifier: #VU166198
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-214
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to obtain credentials embedded in route and cluster URLs supplied as nats-server command-line arguments.
The vulnerability exists due to incomplete redaction of command-line credentials in nats-server monitoring and profiling debug responses when route and cluster URL arguments contain credentials. A remote attacker can request debug information from an accessible monitoring or profiling listener to read the exposed credentials.
Affected software
nats-server
Remediation
Install security update from vendor's website.
nats-server - addressed in versions 2.12.8, 2.14.0, 2.15.0