CVE-2026-67218
Description
A flaw was found in RabbitMQ. A user with management tag and virtual host (vhost) access, but lacking configure permissions, can exploit a vulnerability in the HTTP API for super-stream creation. This flaw allows the user to bypass permission checks and create persistent cluster-wide resources, such as exchanges and partitioned stream queues. This leads to a privilege escalation, enabling a user with view-only access to create and manage resources.
Statement
Red Hat rates this flaw MODERATE in products that ship affected RabbitMQ builds. With stream management enabled, a user with management and virtual-host access but no configure permission can create persistent super-stream resources through the HTTP API, crossing the intended permission boundary.
Mitigation
Restrict that access or disable stream management where it is not needed.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 4.3 | N/A | N/A |
| Attack Vector | Network | N/A | N/A |
| Attack Complexity | Low | N/A | N/A |
| Privileges Required | Low | N/A | N/A |
| User Interaction | None | N/A | N/A |
| Scope | Unchanged | N/A | N/A |
| Confidentiality | None | N/A | N/A |
| Integrity Impact | Low | N/A | N/A |
| Availability Impact | None | N/A | N/A |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Red Hat CVSS v3 Score Explanation
Independent review of GHSA-34jw-rm7g-hph4 and FIRST CVSS v3.1: authenticated read-only management/vhost access is PR:L, configured plugin assumed for base AC:L, same RabbitMQ authority S:U, constrained super-stream creation I:L; no demonstrated C/A impact. CVSS 4 AT:P and PR:H do not justify automatic v3 AC:H/PR:H conversion.
Understanding the Weakness (CWE)
Confidentiality
Technical Impact: Read Application Data; Read Files or Directories
An attacker could read sensitive data, either by reading the data directly from a data store that is not restricted, or by accessing insufficiently-protected, privileged functionality to read the data.
Integrity
Technical Impact: Modify Application Data; Modify Files or Directories
An attacker could modify sensitive data, either by writing the data directly to a data store that is not restricted, or by accessing insufficiently-protected, privileged functionality to write the data.
Access Control
Technical Impact: Gain Privileges or Assume Identity; Bypass Protection Mechanism
An attacker could gain privileges by modifying or reading critical data directly, or by accessing privileged functionality.
Availability
Technical Impact: DoS: Crash, Exit, or Restart; DoS: Resource Consumption (CPU); DoS: Resource Consumption (Memory); DoS: Resource Consumption (Other)
An attacker could gain unauthorized access to resources on the system and excessively consume those resources, leading to a denial of service.
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