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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2026-57217

30
FAUCET Score

RabbitMQ is a messaging and streaming broker. Prior to 3.13.15, 4.0.21, 4.1.11, and 4.2.6, RabbitMQ topic authorization can allow restricted topic writes and binds during metadata-store failures because topic-permission lookup errors from Khepri can collapse to undefined, which the internal backend treats as allow. This issue is fixed in versions 3.13.15, 4.0.21, 4.1.11, and 4.2.6.

First published: Jul 10, 2026Last modified: Jul 10, 2026

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.13.0, < 4.2.6CPE matchmatch criteria
cpe:2.3:a:broadcom:rabbitmq_server:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

7.0HIGH

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
LOW
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
NONE
VS Availability
NONE
SS Confidentiality
HIGH
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.35%
Probability of exploitation in next 30 days
EPSS Percentile
27.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0035 is in the 37th percentile among its peer group of 21,958 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: azl3 rabbitmq-server 3.13.7-6 on Azure Linux 3.0Fixed in: 3.13.7-7

Vendor Advisories (1)

microsoft2026-Jul/CVE-2026-57217Important

RabbitMQ: Topic authorization can lead to cross-tenant routing-key bypass

Jul 14, 2026

References

github.com / rabbitmq/rabbitmq-server/commit/94f1d33a70fcfa09006649599e79fc92786a2d36
Patch
github.com / rabbitmq/rabbitmq-server/commit/ce1f682aa6b398820c5e3ce1ff7435184027c82c
Patch
github.com / rabbitmq/rabbitmq-server/pull/15941
Issue TrackingPatch
github.com / rabbitmq/rabbitmq-server/pull/15943
Issue TrackingPatch
github.com / rabbitmq/rabbitmq-server/releases/tag/v4.2.6
Release Notes
github.com / rabbitmq/rabbitmq-server/security/advisories/GHSA-gpvw-75h5-3wvx
ExploitVendor Advisory