PT-2026-56581 · Nats.Io · Nats Server

Published 2026-07-08 · Updated 2026-07-08 · CVE-2026-58207

NVD

CVSS v3.1

7.7

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

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.

Fix

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

CVE-2026-58207

Affected Products

Nats Server

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2026-58207 · Security Note
• https://github.com/nats-io/nats-server/releases/tag/v2.14.3 · Note
• https://github.com/nats-io/nats-server/commit/2ae047139e37a38cb01e259a67909e7a39fa38e9 · Note
• https://github.com/nats-io/nats-server/security/advisories/GHSA-q59r-vq66-pxc2 · Note
• https://github.com/nats-io/nats-server/releases/tag/v2.12.12 · Note
• https://github.com/nats-io/nats-server/commit/894d9411927681d66ce349bf1afe49608dc0c1a3 · Note