CVE-2026-57211

EUVD-2026-43016
RabbitMQ is a messaging and streaming broker. Prior to 4.1.11 and 4.2.6 on Windows, the RabbitMQ management plugin static file handler rabbit_mgmt_wm_static can pass URL-encoded backslashes to erl_prim_loader:read_file_info before path validation when multiple management extension plugins are enabled, causing outbound DNS and SMB requests to attacker-controlled UNC paths. This issue is fixed in versions 4.1.11 and 4.2.6.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
6.5 MEDIUM
NETWORK
HIGH
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 47.49%
Affected Products (NVD)
VendorProductVersion
broadcomrabbitmq_server
4.1.0 ≤
𝑥
< 4.2.6
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
rabbitmq-server
bookworm
3.10.8-1.1+deb12u1
fixed
bookworm (security)
3.10.8-1.1+deb12u1
fixed
bullseye
3.8.9-3+deb11u1
fixed
bullseye (security)
3.8.9-3+deb11u1
fixed
forky
4.3.2-4
fixed
sid
4.3.2-4
fixed
trixie
4.0.5-6+deb13u2
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
rabbitmq-server
bionic
needs-triage
focal
needs-triage
jammy
needs-triage
noble
needs-triage
resolute
needs-triage
xenial
needs-triage
Azure Linux logo
Azure Linux Releases
Azure Package
Release
rabbitmq-server
Azure Linux 3.0
0:3.13.7-7.azl3
fixed
Common Weakness Enumeration
References
https://github.com/rabbitmq/rabbitmq-server/commit/39c3a8e9c71da0403d8dfc13f700e60c936e3682
https://github.com/rabbitmq/rabbitmq-server/commit/6730797f6a34b4e8308cea60adf1243857e70204
https://github.com/rabbitmq/rabbitmq-server/pull/15803
https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6
https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-7v84-m3g5-vxq6
https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-7v84-m3g5-vxq6