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CVE-2026-67226

Medium priority
Needs evaluation

RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.0.22 and 4.1.14 and 4.2.7, Admin-only atom exhaustion: PUT /api/users tags list. settags/2 maps rabbitdatacoercion:toatom/1 over the user's tags list. The 20 MB...

1 affected package

rabbitmq-server

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
rabbitmq-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-67225

Medium priority
Needs evaluation

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.15, 4.0.20, 4.1.11, and 4.2.6, the stream protocol stored the FrameMax value negotiated during the Tune handshake but did not compare it with an inbound frame's...

1 affected package

rabbitmq-server

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
rabbitmq-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-67223

Medium priority
Needs evaluation

RabbitMQ is a messaging and streaming broker. The advisory establishes affected 3.13, 4.0, 4.1, 4.2, and 4.3 maintenance lines but contains conflicting first-fixed versions for the 3.13, 4.0, and 4.1 lines. fill/2 substitutes...

1 affected package

rabbitmq-server

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
rabbitmq-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-67222

Medium priority
Needs evaluation

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.15, 4.0.20, 4.1.11, and 4.2.6, mechanisms/1 applied list_to_atom/1 to every colon-delimited token in an attacker-controlled auth_mechanism value, permanently...

1 affected package

rabbitmq-server

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
rabbitmq-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-66078

Medium priority
Needs evaluation

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.15 and 4.0.20 and 4.1.11 and 4.2.6, protected tag bypass via bulk-delete. dELETE /api/users/:name refuses to delete users tagged...

1 affected package

rabbitmq-server

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
rabbitmq-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-66073

Medium priority
Needs evaluation

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.15 and 4.0.20 and 4.1.11 and 4.2.6, Atom table exhaustion via management API node field. pUT /api/queues/:vhost/:name (and the exchanges and bindings endpoints)...

1 affected package

rabbitmq-server

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
rabbitmq-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-66071

Medium priority
Needs evaluation

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.15 and 4.0.22 and 4.1.11 and 4.2.6 and 4.3.1, Atom exhaustion: OAuth2 JWT tag: scope values. extractscopes/1 parses scopes of the form .tag: and...

1 affected package

rabbitmq-server

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
rabbitmq-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-61837

Medium priority
Needs evaluation

RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.3.3, 4.2.9, 4.1.14, and 4.0.23, AMQP 1.0 management GET /bindings exposes full binding topology to any authenticated AMQP user without resource/management permission...

1 affected package

rabbitmq-server

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
rabbitmq-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-67405

Medium priority
Needs evaluation

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, Neither the Web-MQTT handler (deps/rabbitmq_web_mqtt/src/rabbit_web_mqtt_handler.erl:104) nor the Web-STOMP...

1 affected package

rabbitmq-server

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
rabbitmq-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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CVE-2026-67404

Medium priority
Needs evaluation

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, When no CA bundle is available, ssl_options/1 falls back to [{verify, verify_none}] with no warning. An attacker in a...

1 affected package

rabbitmq-server

Package 26.04 LTS 24.04 LTS 22.04 LTS 20.04 LTS 18.04 LTS
rabbitmq-server Needs evaluation Needs evaluation Needs evaluation Needs evaluation Needs evaluation
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