CVE-2026-66067

RabbitMQ is a messaging and streaming broker. Prior to versions 4.2.7 and 4.3.1, The stream open handler calls only checkvhostaccess; it omits the node/vhost/user connection-limit checks that rabbitreader performs for AMQP. A developer %% FIXME comment at the cited line explicitly acknowledges th...

CVE-2026-66080

RabbitMQ is a messaging and streaming broker. Prior to versions 4.1.11, 4.2.6, and 4.3.0, validatepartitions only checks that the requested partition count is at least 1, with no upper bound. A large count such as lists:seq0, 500000000 allocates roughly 8GB. Preconditions include The...

CVE-2026-66072

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.1, getchunkselector/1 calls binarytoatom on the raw client-supplied property from post-auth subscribe and resolveoffsetspec frames, with no whitelist and no existing guard. An authenticated...

UBUNTU-CVE-2026-66067

RabbitMQ is a messaging and streaming broker. Prior to versions 4.2.7 and 4.3.1, The stream open handler calls only checkvhostaccess; it omits the node/vhost/user connection-limit checks that rabbitreader performs for AMQP. A developer %% FIXME comment at the cited line explicitly acknowledges th...

CVE-2026-66072

A flaw was found in RabbitMQ. An authenticated stream client with read access to any stream can exploit a vulnerability in the getchunkselector/1 function. This function processes a client-supplied chunkselector property without proper validation, leading to an atom table exhaustion. Successful...

CVE-2026-66067

A flaw was found in RabbitMQ. The stream protocol handler does not correctly enforce per-user and per-virtual host vhost connection limits. An authenticated user can exploit this by connecting through port 5552, bypassing the intended connection restrictions. This could lead to resource exhaustio...

EUVD-2026-85663

RabbitMQ is a messaging and streaming broker. Prior to versions 4.0.22, 4.1.11, 4.2.6, and 4.3.0, acceptcontent/2 at line 56 calls rabbitstreammanager:createsuperstream/... directly after isauthorized which only checks the management tag + vhost access via isauthorizedvhost. The stream-protocol...

CVE-2026-67218

RabbitMQ is a messaging and streaming broker. Prior to versions 4.0.22, 4.1.11, 4.2.6, and 4.3.0, acceptcontent/2 at line 56 calls rabbitstreammanager:createsuperstream/... directly after isauthorized which only checks the management tag + vhost access via isauthorizedvhost. The stream-protocol...

CVE-2026-67218 RabbitMQ: Super-stream HTTP creation skips configure-permission check

RabbitMQ is a messaging and streaming broker. Prior to versions 4.0.22, 4.1.11, 4.2.6, and 4.3.0, acceptcontent/2 at line 56 calls rabbitstreammanager:createsuperstream/... directly after isauthorized which only checks the management tag + vhost access via isauthorizedvhost. The stream-protocol...

CVE-2026-67218 RabbitMQ: Super-stream HTTP creation skips configure-permission check

RabbitMQ is a messaging and streaming broker. Prior to versions 4.0.22, 4.1.11, 4.2.6, and 4.3.0, acceptcontent/2 at line 56 calls rabbitstreammanager:createsuperstream/... directly after isauthorized which only checks the management tag + vhost access via isauthorizedvhost. The stream-protocol...

CVE-2026-67240

RabbitMQ is a messaging and streaming broker. Prior to versions 4.2.7 and 4.3.1, patterntoregex maps % - .? and - ., then compiles ^...$ with only unicode; re:run is called with only capture, none - no explicit matchlimit. A pattern like %%...%X becomes ^.?..?.....?.X$ with overlapping lazy...

CVE-2026-67240

Prior to versions 4.2.7 and 4.3.1 , RabbitMQ is vulnerable to a backtracking-driven CPU amplification (ReDoS) attack. The issue occurs because pattern_to_regex maps wildcards to regex patterns that, when combined with overlapping lazy quantifiers, cause high CPU usage. Specifically, SQL filters a...

EUVD-2026-85636

RabbitMQ is a messaging and streaming broker. Prior to versions 4.2.7 and 4.3.1, patterntoregex maps % - .? and - ., then compiles ^...$ with only unicode; re:run is called with only capture, none - no explicit matchlimit. A pattern like %%...%X becomes ^.?..?.....?.X$ with overlapping lazy...

CVE-2026-67240 RabbitMQ: ReDoS via AMQP 1.0 SQL filter LIKE wildcard

RabbitMQ is a messaging and streaming broker. Prior to versions 4.2.7 and 4.3.1, patterntoregex maps % - .? and - ., then compiles ^...$ with only unicode; re:run is called with only capture, none - no explicit matchlimit. A pattern like %%...%X becomes ^.?..?.....?.X$ with overlapping lazy...

CVE-2026-67240 RabbitMQ: ReDoS via AMQP 1.0 SQL filter LIKE wildcard

RabbitMQ is a messaging and streaming broker. Prior to versions 4.2.7 and 4.3.1, patterntoregex maps % - .? and - ., then compiles ^...$ with only unicode; re:run is called with only capture, none - no explicit matchlimit. A pattern like %%...%X becomes ^.?..?.....?.X$ with overlapping lazy...

CVE-2026-67240 RabbitMQ: ReDoS via AMQP 1.0 SQL filter LIKE wildcard

RabbitMQ is a messaging and streaming broker. Prior to versions 4.2.7 and 4.3.1, patterntoregex maps % - .? and - ., then compiles ^...$ with only unicode; re:run is called with only capture, none - no explicit matchlimit. A pattern like %%...%X becomes ^.?..?.....?.X$ with overlapping lazy...

CVE-2026-66072

RabbitMQ, a messaging and streaming broker, is vulnerable to atom table exhaustion in versions prior to 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.1. The get_chunk_selector/1 function fails to validate raw client-supplied chunk_selector properties from post-auth subscribe and resolve_offset_spec fra...

CVE-2026-66072

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.1, getchunkselector/1 calls binarytoatom on the raw client-supplied property from post-auth subscribe and resolveoffsetspec frames, with no whitelist and no existing guard. An authenticated...

EUVD-2026-85634

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.1, getchunkselector/1 calls binarytoatom on the raw client-supplied property from post-auth subscribe and resolveoffsetspec frames, with no whitelist and no existing guard. An authenticated...

CVE-2026-66072 RabbitMQ: Atom table exhaustion via stream `chunk_selector`

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.1, getchunkselector/1 calls binarytoatom on the raw client-supplied property from post-auth subscribe and resolveoffsetspec frames, with no whitelist and no existing guard. An authenticated...