CVE-2026-58251General(linuxfoundation / nats-server)

LOWCVSS 6.5 · MEDIUM

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.0, 2.12.7, and 2.11.16, an authenticated user with subscription deny permissions could bypass a plain subject deny rule by using a queue subscription, because queue-specific deny evaluation could override the plain subject deny result when the queue name itself was not denied. This issue is fixed in versions 2.14.0, 2.12.7, and 2.11.16.

0.0/ 10 priority

Sources & remediation

Weakness type (CWE)
CWE-285

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • nats-server

Threat summary

  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Technical details provided in 1 signal
  • General: 2 classified signals
  • Peaked 1d ago at 1 mentions (2026-07-13); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Products
nats-server

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-07-13: 1Mentions · 2026-07-16: 1Technical Details · 2026-07-13: 107-1307-16
Signal classification1 categories
General
2100.0%
Referenced assets2 URLs
Full discourse2 posts
  • connect24h@connect24h
    General

    ソース: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58251

    Post summary

    The text consists solely of a source link to Microsoft’s vulnerability page for CVE‑2026‑58251, with no further details or claims.

    00000102
    4.5K followersView on X
  • DailyCVE@dailycve
    General

    🟠 NATS Server Authorization Bypass, #CVE-2026-58251 (Medium) -DC-Jul2026-922 https://dailycve.com/nats-server-authorization-bypass-cve-2026-58251-medium-dc-jul2026-922/

    Post summary

    The post cites CVE-2026-58251, a medium‑severity authorization bypass in NATS Server, linking to a DailyCVE page, but provides no exploit or patch details.

    0000046
    218 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Applinuxfoundationnats-server---

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