PT-2026-100564

Security vulnerability affects the nats-server-fips package. This issue is resolved in later releases. See references for vulnerability details...

PT-2026-101221

Security vulnerability affects the nats-server-fips package. This issue is resolved in later releases. See references for vulnerability details...

PT-2026-102008

Security vulnerability affects the nats-server-fips package. This issue is resolved in later releases. See references for vulnerability details...

PT-2026-100768

Security vulnerability affects the nats-server-fips package. This issue is resolved in later releases. See references for vulnerability details...

PT-2026-101319

Security vulnerability affects the nats-server-fips package. This issue is resolved in later releases. See references for vulnerability details...

PT-2026-102130

Security vulnerability affects the nats-server-fips package. This issue is resolved in later releases. See references for vulnerability details...

PT-2026-102156

Security vulnerability affects the nats-server-fips package. This issue is resolved in later releases. See references for vulnerability details...

PT-2026-101505

Security vulnerability affects the nats-server-fips package. This issue is resolved in later releases. See references for vulnerability details...

PT-2026-102153

Security vulnerability affects the nats-server-fips package. This issue is resolved in later releases. See references for vulnerability details...

PT-2026-101453

Security vulnerability affects the nats-server-fips package. This issue is resolved in later releases. See references for vulnerability details...

PT-2026-100376

Security vulnerability affects the nats-server-fips package. This issue is resolved in later releases. See references for vulnerability details...

PT-2026-100842

Security vulnerability affects the nats-server-fips package. This issue is resolved in later releases. See references for vulnerability details...

CLEANSTART-2026-FD87409 Previously, resolving relative paths containing parent directory ('

Multiple security vulnerabilities affect the nats-streaming package. Previously, resolving relative paths containing parent directory '. See references for individual vulnerability details...

CLEANSTART-2026-UN51807 ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label

Multiple security vulnerabilities affect the nats-streaming package. The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label. See references for individual vulnerability details...

CVE-2026-58210

A flaw was found in NATS Server. An unauthenticated remote attacker could send large, incomplete MQTT CONNECT packets to the server. This action causes the server to retain these packets, consuming significant memory before authentication is complete. This can lead to a denial of service DoS...

CVE-2026-58254

A flaw was found in NATS Server. Message trace destination checks, which ensure that trace events are sent to authorized subjects, were not consistently applied to messages originating from leafnode connections. This inconsistency allows a leafnode operator to bypass these checks and send trace...

CVE-2026-58214

A flaw was found in NATS Server, a high-performance messaging system. An authenticated MQTT Message Queuing Telemetry Transport client could bypass security permissions by subscribing to an internal subject family. This unauthorized access allows the client to view sensitive MQTT Quality of Servi...

CVE-2026-58211

A flaw was found in NATS Server, a high-performance messaging system. This vulnerability allows a client to bypass normal authentication and connection restrictions by registering as a "noauthuser" through a specific parser path. This occurs when the client's initial operation is not a standard...

CVE-2026-58209

A flaw was found in NATS Server. This vulnerability allows for unauthorized information disclosure where MQTT messages, intended to be denied based on subscription rules, are still delivered to subscribers. This occurs because the server's delivery paths do not consistently recheck the original...

CVE-2026-58213

A flaw was found in NATS Server. An authenticated MQTT client could exploit this by embedding protocol control characters within subscription filters. These characters would then be forwarded as NATS protocol data to route or leafnode connections, leading to the corruption of the protocol stream...