Medium severity6.5NVD Advisory· Published Jul 8, 2026· Updated Jul 13, 2026
CVE-2026-58251
CVE-2026-58251
Description
NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.0, 2.12.7, and 2.11.16, an authenticated user with subscription deny permissions could bypass a plain subject deny rule by using a queue subscription, because queue-specific deny evaluation could override the plain subject deny result when the queue name itself was not denied. This issue is fixed in versions 2.14.0, 2.12.7, and 2.11.16.
Affected products
3- Range: before 2.14.0, 2.12.7, and 2.11.16
Patches
Vulnerability mechanics
References
7- github.com/nats-io/nats-server/commit/013586288078def45a6788096924eb4d150db65cnvdPatch
- github.com/nats-io/nats-server/commit/79c2f6e9ff87f594596337b6427dda85c38d1fe1nvdPatch
- github.com/nats-io/nats-server/commit/b9ffb63b85e7db3d25a13b2e234f5f7f7c13164dnvdPatch
- github.com/nats-io/nats-server/security/advisories/GHSA-jx8g-9g95-6322nvdVendor Advisory
- github.com/nats-io/nats-server/releases/tag/v2.11.16nvdRelease Notes
- github.com/nats-io/nats-server/releases/tag/v2.12.7nvdRelease Notes
- github.com/nats-io/nats-server/releases/tag/v2.14.0nvdRelease Notes
News mentions
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