Dashboard / CVE-2026-58211

CVE-2026-58211

MEDIUM
MEDIUM Priority: 0.02 BB Relevance: 61/100
Published: 2026-07-08 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: Unchanged
C: Low
I: Low
A: None

Description

NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.3 and 2.12.12, a client could be registered as the configured no_auth_user through a parser path used when the first client operation was not CONNECT, bypassing user-level connection restrictions such as allowed_connection_types or proxy_required that normal authentication would apply. This issue is fixed in versions 2.14.3 and 2.12.12.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
linuxfoundation nats-server 2.12.0 – 2.12.12

References & Advisories (1)

Bug Bounty Relevance

61 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

5.4 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

EPSS — Exploitation Probability

0.29%
Raw Score 0.002920
Percentile 21.8%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00292
2026-10-28
0.00292

Intelligence Sources

nvd ref →

External Links