CVE-2026-66070

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.17, 4.0.22, 4.1.13, and 4.2.6, matchorigin/1 returned the bare reflected Origin and allowed credentials even when the wildcard "" was configured, so the response echoed the attacker's origin together with...

EUVD-2026-85625

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.17, 4.0.22, 4.1.13, and 4.2.6, matchorigin/1 returned the bare reflected Origin and allowed credentials even when the wildcard "" was configured, so the response echoed the attacker's origin together with...

CVE-2026-66070 RabbitMQ: CORS * reflects Origin with Allow-Credentials

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.17, 4.0.22, 4.1.13, and 4.2.6, matchorigin/1 returned the bare reflected Origin and allowed credentials even when the wildcard "" was configured, so the response echoed the attacker's origin together with...

CVE-2026-66070

RabbitMQ is a messaging and streaming broker containing a vulnerability in the rabbit_mgmt_cors.erl component. Prior to versions 3.13.17, 4.0.22, 4.1.13, and 4.2.6 , the match_origin/1 function incorrectly reflected the request Origin while allowing credentials when a wildcard (*) was configured....

CVE-2026-66070 RabbitMQ: CORS * reflects Origin with Allow-Credentials

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.17, 4.0.22, 4.1.13, and 4.2.6, matchorigin/1 returned the bare reflected Origin and allowed credentials even when the wildcard "" was configured, so the response echoed the attacker's origin together with...

CVE-2026-66070 RabbitMQ: CORS * reflects Origin with Allow-Credentials

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.17, 4.0.22, 4.1.13, and 4.2.6, matchorigin/1 returned the bare reflected Origin and allowed credentials even when the wildcard "" was configured, so the response echoed the attacker's origin together with...

CVE-2026-67238

RabbitMQ is a messaging and streaming broker. Prior to versions 4.2.7 and 4.3.1, rabbitpidcodec:decomposefrombinary/1 parses a caller-supplied ETF-encoded binary and calls binarytoatomNode, utf8 on the node-name field. It is reached from rabbitvolatilequeue:pidfromname/2, which is invoked for any...

EUVD-2026-85624

RabbitMQ is a messaging and streaming broker. Prior to versions 4.2.7 and 4.3.1, rabbitpidcodec:decomposefrombinary/1 parses a caller-supplied ETF-encoded binary and calls binarytoatomNode, utf8 on the node-name field. It is reached from rabbitvolatilequeue:pidfromname/2, which is invoked for any...

CVE-2026-67238 RabbitMQ: Atom-table exhaustion via reply-to queue name decoding

RabbitMQ is a messaging and streaming broker. Prior to versions 4.2.7 and 4.3.1, rabbitpidcodec:decomposefrombinary/1 parses a caller-supplied ETF-encoded binary and calls binarytoatomNode, utf8 on the node-name field. It is reached from rabbitvolatilequeue:pidfromname/2, which is invoked for any...

CVE-2026-67238 RabbitMQ: Atom-table exhaustion via reply-to queue name decoding

RabbitMQ is a messaging and streaming broker. Prior to versions 4.2.7 and 4.3.1, rabbitpidcodec:decomposefrombinary/1 parses a caller-supplied ETF-encoded binary and calls binarytoatomNode, utf8 on the node-name field. It is reached from rabbitvolatilequeue:pidfromname/2, which is invoked for any...

CVE-2026-67238

RabbitMQ versions prior to 4.2.7 and 4.3.1 are vulnerable to a Denial of Service (DoS) condition due to atom-table exhaustion . The root cause lies in the rabbit_pid_codec:decompose_from_binary/1 function, which parses a caller-supplied ETF-encoded binary and calls binary_to_atom(Node, utf8) on t...

CVE-2026-67238 RabbitMQ: Atom-table exhaustion via reply-to queue name decoding

RabbitMQ is a messaging and streaming broker. Prior to versions 4.2.7 and 4.3.1, rabbitpidcodec:decomposefrombinary/1 parses a caller-supplied ETF-encoded binary and calls binarytoatomNode, utf8 on the node-name field. It is reached from rabbitvolatilequeue:pidfromname/2, which is invoked for any...

CVE-2026-66076

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, isauthorized/2 calls rabbitmgmtutil:isauthorized/2, which checks only the management tag, instead of isauthorizedvhost/2. The /api/queues/quorum/:vhost/:queue/status handler reads the vhost...

CVE-2026-66076 RabbitMQ: Cross-vhost quorum-queue status and stream tracking disclosure

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, isauthorized/2 calls rabbitmgmtutil:isauthorized/2, which checks only the management tag, instead of isauthorizedvhost/2. The /api/queues/quorum/:vhost/:queue/status handler reads the vhost...

EUVD-2026-85623

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, isauthorized/2 calls rabbitmgmtutil:isauthorized/2, which checks only the management tag, instead of isauthorizedvhost/2. The /api/queues/quorum/:vhost/:queue/status handler reads the vhost...

CVE-2026-66076

The RabbitMQ messaging and streaming broker is vulnerable to a cross-vhost information disclosure issue in versions prior to 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0 . The root cause is that the is_authorized/2 function calls rabbit_mgmt_util:is_authorized/2, which incorrectly checks only the ma...

CVE-2026-66076 RabbitMQ: Cross-vhost quorum-queue status and stream tracking disclosure

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, isauthorized/2 calls rabbitmgmtutil:isauthorized/2, which checks only the management tag, instead of isauthorizedvhost/2. The /api/queues/quorum/:vhost/:queue/status handler reads the vhost...

CVE-2026-66076 RabbitMQ: Cross-vhost quorum-queue status and stream tracking disclosure

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, isauthorized/2 calls rabbitmgmtutil:isauthorized/2, which checks only the management tag, instead of isauthorizedvhost/2. The /api/queues/quorum/:vhost/:queue/status handler reads the vhost...

CVE-2026-75516

A flaw was found in the RabbitMQ Java client. A malicious AMQP Advanced Message Queuing Protocol server, or a man-in-the-middle attacker, can modify connection parameters and inject oversized frames. This can cause the client to allocate a large amount of memory, leading to memory exhaustion and...

CVE-2026-69219

A flaw was found in the RabbitMQ Java client library. A malicious AMQP Advanced Message Queuing Protocol peer can exploit this by sending a specially crafted message during the pre-authentication phase. This message can cause the client to allocate an excessively large amount of memory, leading t...