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CVE-2026-58252

NATS Server: Subscribe Authz Bypass via Wildcard-Overlap PUBLISHED

Description (CNA)

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 could receive messages on denied subjects when a wildcard subscription overlapped with a configured wildcard deny rule but was not a subset of it, and queue subscriptions could also affect delivery to legitimate queue consumers. This issue is fixed in versions 2.14.0, 2.12.7, and 2.11.16.

Affected (CNA)

Vendor / productVersions
nats-io / nats-serveraffected < 2.11.16; affected >= 2.12.0-preview.1, < 2.12.7

CWE

CWE-285

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.