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CVE-2026-58252

NATS Server: Subscribe Authz Bypass via Wildcard-Overlap

Published: Jul 8, 2026Updated: Jul 13, 2026 Sources: CVE List NVDCWE-285
6.5MEDIUM
NVD MITRE
EPSS Score
0.3%
Top 73.3%
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 could receive messages on denied subjects when a wildcard subscription overlapped with a configured wildcard deny rule but was not a subset of it, and queue subscriptions could also affect delivery to legitimate queue consumers. 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

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

Exploitability

Official Patch Available

References

https://github.com/nats-io/nats-server/commit/8ced85a11497f86704a95d960281480ce037386b
github.com
https://github.com/nats-io/nats-server/commit/a42a6d1e258eb5c3a2190384d31965a4b715e854
github.com
https://github.com/nats-io/nats-server/commit/e611ca9604697b02d8f22beb76037400a9cf72e6
github.com
and 4 more references View all →

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