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CVE-2026-58207

NATS Server: Remote crash via integer overflow in Connz pagination

Published: Jul 8, 2026Updated: Jul 9, 2026 Sources: CVE List NVDCWE-190
7.7HIGH
NVD MITRE
EPSS Score
0.4%
Top 67.5%
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 2.14.3 and 2.12.12, a client able to send account-scoped connection monitoring requests could crash the server by supplying Connz pagination Offset and Limit values that overflowed internal arithmetic before the response window was safely bounded. This issue is fixed in versions 2.14.3 and 2.12.12.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:CC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-190

Affected Products

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

Exploitability

Official Patch Available
Workaround Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://github.com/nats-io/nats-server/commit/2ae047139e37a38cb01e259a67909e7a39fa38e9
github.com
https://github.com/nats-io/nats-server/commit/894d9411927681d66ce349bf1afe49608dc0c1a3
github.com
https://github.com/nats-io/nats-server/releases/tag/v2.12.12
github.com
and 2 more references View all →

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