Insertion of Sensitive Information Into Debugging Code in nats-server - CVE-2026-33247
Published: April 22, 2026 / Updated: April 23, 2026
Vulnerability identifier: #VU126855
CSH Severity: High
CVSS v4: 9.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-33247
CWE-ID: CWE-215
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to credentials via command-line argv exposed to monitoring. A remote attacker can gain access to sensitive information on the system.
Affected software
nats-server
How to mitigate CVE-2026-33247
Install updates from vendor's website.
nats-server - addressed in versions 2.11.15, 2.12.6