PT-2026-56537 · Unknown · Nats Server

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CVE-2026-58251

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Published

2026-07-08

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Updated

2026-07-14

CVSS v3.1

6.5

Medium

VectorAV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Name of the Vulnerable Software and Affected Versions NATS Server versions prior to 2.14.0 NATS Server versions prior to 2.12.7 NATS Server versions prior to 2.11.16
Description An authenticated user with subscription deny permissions can bypass a plain subject deny rule by utilizing a queue subscription. This occurs because the evaluation of queue-specific deny rules can override the result of a plain subject deny rule if the queue name itself is not denied.
Recommendations Update to version 2.14.0 Update to version 2.12.7 Update to version 2.11.16

Exploit

Fix

Improper Authorization

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Weakness Enumeration

Related Identifiers

AZL-92244
BIT-NATS-2026-58251
CVE-2026-58251
GHSA-JX8G-9G95-6322

Affected Products

Nats Server