CVE-2026-58207

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.

PUBLISHED Reserved 2026-06-29 | Published 2026-07-08 | Updated 2026-07-09 | Assigner GitHub_M

Problem types

CWE-190: Integer Overflow or Wraparound

Product status

References

github.com/...server/security/advisories/GHSA-q59r-vq66-pxc2

github.com/...ommit/2ae047139e37a38cb01e259a67909e7a39fa38e9

github.com/...ommit/894d9411927681d66ce349bf1afe49608dc0c1a3

github.com/nats-io/nats-server/releases/tag/v2.12.12

github.com/nats-io/nats-server/releases/tag/v2.14.3

cve.org (CVE-2026-58207)

nvd.nist.gov (CVE-2026-58207)

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