CVE-2026-67407

RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.3.3 and 4.2.9 and 4.1.14 and 4.0.23, Incomplete fix for CVE-2026-44838: escaperegexchar/1 does not escape -, leaving room for an MQTT topic permission bypass. the CVE-2026-44838 fix made expandtopicpermission/2 escape regex...

DEBIAN-CVE-2026-67242

RabbitMQ is a messaging and streaming broker. From 4.2.0 until 4.2.9 and 4.3.3, OAuth2 isintegerExp guard skips token-expiry checks for float exp. validatetokenexpiry/1 lines 208-214 and expirytimestamp/1 138-144 both guard with 'when isintegerExp' and fall through to ok/never for float values...

CVE-2026-67239

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.18 and 4.0.23 and 4.1.14 and 4.2.9 and 4.3.3, Stored XSS via TLS peer-certificate DN in stream-management UI sibling of V-11. lines 102/106/110 render peercertsubject / peercertissuer with raw and no fmtstring. RFC4514...

CVE-2026-67241

RabbitMQ is a messaging and streaming broker. From 4.2.0 until 4.2.9 and 4.3.3, AMQP 1.0 management exchange.declare skips alternate-exchange permission check. pUT /exchanges/:name lines 192-240 checks only configure on the declared exchange and passes XArgs straight to rabbitexchange:declare/7. ...

CVE-2026-67242

RabbitMQ is a messaging and streaming broker. From 4.2.0 until 4.2.9 and 4.3.3, OAuth2 isintegerExp guard skips token-expiry checks for float exp. validatetokenexpiry/1 lines 208-214 and expirytimestamp/1 138-144 both guard with 'when isintegerExp' and fall through to ok/never for float values...

CVE-2026-67409

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 4.3.3, 4.2.9, 4.1.14, 4.0.23, and 3.13.18, JWKS Fetch Ignores HTTP Response Status Code - Signing Key Destruction Causes Authentication DoS CWE-252. the JWKS key fetching mechanism in uaajwt.erl does not validate the HTTP response...

CVE-2026-67406

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, Shovel does not format state logged by the crash reporter and can leave unencrypted credentials in a crash dump file. the shovel worker genserver processes does not implement the formatstatus/2...

DEBIAN-CVE-2026-67239

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.18 and 4.0.23 and 4.1.14 and 4.2.9 and 4.3.3, Stored XSS via TLS peer-certificate DN in stream-management UI sibling of V-11. lines 102/106/110 render peercertsubject / peercertissuer with raw and no fmtstring. RFC4514...

CVE-2026-67408

RabbitMQ is a messaging and streaming broker. From 4.1.0 until 4.3.3, 4.2.9, and 4.1.11, Stream Management Super-Stream Binding Keys Allocation Allows Low-Privilege Node Denial of Service. rabbitMQ 4.3.1 with rabbitmqstreammanagement enabled accepts PUT /api/stream/super-streams/vhost/name reques...

DEBIAN-CVE-2026-67227

RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.0.22 and 4.1.14 and 4.2.7 and 4.3.1, Atom exhaustion: toatom on global-parameter :name. resourceexists/2 and the PUT/DELETE handlers call rabbitdatacoercion:toatom/1 on the :name URL path segment. toatom/1 uses binarytoatom/2 unsafe...

CVE-2026-67237

RabbitMQ is a messaging and streaming broker. From 4.2.0 until 4.2.8 and 4.3.2, settokenauth/2 inserted a bearer token from the Authorization header or accesstoken cookie into OAuth bootstrap JavaScript without escaping, allowing attacker-controlled token content to execute JavaScript in the...

CVE-2026-67226

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 management body limit fits 3-4M short tag strings. An administrator can...

DEBIAN-CVE-2026-67230

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 Web STOMP WebSocket handler enforced neither maxframesize nor logintimeout before authentication, allowing an unauthenticated client to keep a connection alive with a slow stream of small frame...

CVE-2026-67234

RabbitMQ is a messaging and streaming broker. From 4.2.0 until 4.2.8 and 4.3.2, getauthmechanism/1 used termtobinary/1 on the strictauthmechanism or preferredauthmechanism atom when clearing the corresponding cookie, producing a non-ASCII cookie name that violates RFC 6265 and can prevent the...

DEBIAN-CVE-2026-67237

RabbitMQ is a messaging and streaming broker. From 4.2.0 until 4.2.8 and 4.3.2, settokenauth/2 inserted a bearer token from the Authorization header or accesstoken cookie into OAuth bootstrap JavaScript without escaping, allowing attacker-controlled token content to execute JavaScript in the...

DEBIAN-CVE-2026-67226

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 management body limit fits 3-4M short tag strings. An administrator can...

DEBIAN-CVE-2026-67234

RabbitMQ is a messaging and streaming broker. From 4.2.0 until 4.2.8 and 4.3.2, getauthmechanism/1 used termtobinary/1 on the strictauthmechanism or preferredauthmechanism atom when clearing the corresponding cookie, producing a non-ASCII cookie name that violates RFC 6265 and can prevent the...

CVE-2026-67227

RabbitMQ is a messaging and streaming broker. From 4.0.0 until 4.0.22 and 4.1.14 and 4.2.7 and 4.3.1, Atom exhaustion: toatom on global-parameter :name. resourceexists/2 and the PUT/DELETE handlers call rabbitdatacoercion:toatom/1 on the :name URL path segment. toatom/1 uses binarytoatom/2 unsafe...

CVE-2026-67230

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 Web STOMP WebSocket handler enforced neither maxframesize nor logintimeout before authentication, allowing an unauthenticated client to keep a connection alive with a slow stream of small frame...

DEBIAN-CVE-2026-66078

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 protected rabbitmgmtwmuser:deleteresource/2 checks isprotecteduser. POST /api/users/bulk-delete...