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CVE-2026-58251

NATS Server: Queue Subscribe Authz Bypass

Published: Jul 8, 2026Updated: Jul 13, 2026 Sources: CVE List NVDCWE-285
6.5MEDIUM
NVD MITRE
EPSS Score
0.3%
Top 73.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-285

Affected Products

nats-io
oss-project
nats-serverOn-prem
Databases / cache-message-queue
linuxfoundation
oss-project·USaka pytorch, yocto, everest
nats-serverOn-premDatabase
AI / ML / vector-db-rag

Exploitability

Official Patch Available

References

https://github.com/nats-io/nats-server/security/advisories/GHSA-jx8g-9g95-6322
github.com
https://github.com/nats-io/nats-server/commit/013586288078def45a6788096924eb4d150db65c
github.com
https://github.com/nats-io/nats-server/commit/79c2f6e9ff87f594596337b6427dda85c38d1fe1
github.com
and 4 more references View all →

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