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CVE-2026-58207

HIGH
7.7
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-58207
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-06-29 17:09 UTC
Published
2026-07-08 20:15 UTC
Last updated
2026-07-09 14:41 UTC
Primary CWE
CWE-190
CWE-190: Integer Overflow or Wraparound
Vendor / Product
nats-io / nats-server
Sources
cve.org  ·  NVD

Severity & Metrics

7.7 HIGH CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
SSVC — CISA Coordinator
Exploitation
none
Automatable
no
Tech. Impact
partial
Affected products (1)
VendorProductPlatformVersions
nats-io nats-server — < 2.12.12, >= 2.14.0-RC.1, < 2.14.3
Weakness (CWE)
CWESourceDescription
CWE-190 cna CWE-190: Integer Overflow or Wraparound
CVSS scores (1)
ScoreSeverityVersionSourceVector
7.7 HIGH 3.1 cna CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
References (5)
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