High severity · published Jul 10, 2026
CVE-2026-57215
RabbitMQ: Direct-reply-to binding persistence can lead to unauthorized reply-channel injection and persistent phantom
8.8
CVSS
0.4%
EPSS
No
On KEV
Description
RabbitMQ is a messaging and streaming broker. Prior to 3.13.15, 4.0.20, 4.1.11, and 4.2.6, RabbitMQ allows foreign bindings to amq.rabbitmq.reply-to destinations because volatile direct-reply-to queues can be accepted at bind and route time but are missing from Khepri-backed deletion checks, leaving persistent route entries after unbind. This issue is fixed in versions 3.13.15, 4.0.20, 4.1.11, and 4.2.6.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 32% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RA
rabbitmq-server · rabbitmq
>= 4.2.0, < 4.2.6; >= 4.1.0, < 4.1.11; >= 4.0.0, < 4.0.21; >= 3.13.0, < 3.13.15 · source: vendor
RS
Rabbitmq Server · Broadcom
3.13.0 before 4.2.6 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-57215
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-57215
Patch
https://github.com/rabbitmq/rabbitmq-server/commit/9055500d10ca7629dd2b051c6dc7a4b0bb8f6734
Patch
https://github.com/rabbitmq/rabbitmq-server/commit/c84f3c880e0f22b49c01237cf8f86e176eeadc72
Issue Tracking
https://github.com/rabbitmq/rabbitmq-server/pull/15935
Issue Tracking
https://github.com/rabbitmq/rabbitmq-server/pull/15938
Release Notes
https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6
Exploit
https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-5cq3-v9jx-p3x3
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