Is CVE-2026-33247 actively exploited?

No active exploitation of CVE-2026-33247 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-33247 be exploited remotely?

Yes. CVE-2026-33247 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-33247?

CVE-2026-33247 has a CVSS score of 5.3 (MEDIUM).

HOME VULNERABILITIESCVE-2026-33247

MEDIUM

CVE-2026-33247

CWE-215Published: March 25, 2026· Updated: Mar 26, 2026

5.3

CVSS v3.1

EPSS:0.03%probability of exploitation in 30 daysPercentile:8.5th

Official Description

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, if a nats-server is run with static credentials for all clients provided via argv (the command-line), then those credentials are visible to any user who can see the monitoring port, if that too is enabled. The `/debug/vars` end-point contains an unredacted copy of argv. Versions 2.11.15 and 2.12.6 contain a fix. As a workaround, configure credentials inside a configuration file instead of via argv, and do not enable the monitoring port if using secrets in argv. Best practice remains to not expose the monitoring port to the Internet, or to untrusted network sources.

NVD Source

Technical Analysis

CVE-2026-33247 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 5.3.