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
Patch, vendor advisory and mitigation references on NVD 3
- https://github.com/nats-io/nats-server/commit/2ae047139e37a38cb01e259a67909e7a39fa38e9 Patch
- https://github.com/nats-io/nats-server/commit/894d9411927681d66ce349bf1afe49608dc0c1a3 Patch
- https://github.com/nats-io/nats-server/security/advisories/GHSA-q59r-vq66-pxc2 Mitigation, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.5 · linuxfoundationNVD modified 2026-10-25 17:10
Affected (CPE criteria) 1
cpe:2.3:a:linuxfoundation:nats-server:*:*:*:*:*:*:*:*
References 5
- https://github.com/nats-io/nats-server/commit/2ae047139e37a38cb01e259a67909e7a39fa38e9 Patch
- https://github.com/nats-io/nats-server/commit/894d9411927681d66ce349bf1afe49608dc0c1a3 Patch
- https://github.com/nats-io/nats-server/releases/tag/v2.12.12 Release Notes
- https://github.com/nats-io/nats-server/releases/tag/v2.14.3 Release Notes
- https://github.com/nats-io/nats-server/security/advisories/GHSA-q59r-vq66-pxc2 Mitigation, Vendor Advisory