Description
RabbitMQ is a messaging and streaming broker. Prior to versions 4.1.13, 4.2.7, and 4.3.0, is_authorized/2 uses is_authorized_monitor for all methods. DELETE resets rabbit_core_metrics:reset_auth_attempt_metrics(). Impact is cosmetic (counters only, no log erasure), but inconsistent with rabbit_mgmt_wm_reset.erl which requires admin for the analogous operation. A monitoring-tagged user can reset the per-node authentication-attempt counters via DELETE /api/auth/attempts/:node, erasing evidence of brute-force activity. The sibling endpoint wm_reset requires administrator. Preconditions include Management plugin enabled monitoring tag. This issue is fixed in versions 4.1.13, 4.2.7, and 4.3.0.
Published: 2026-09-23
Score: 2.3 Low
EPSS: n/a
KEV: No
Impact: Information tampering and evidence erasure
Action: Immediate Patch
AI Analysis

Impact

The vulnerability allows a user with a monitoring tag to send a DELETE request to the /api/auth/attempts endpoint and reset per‑node authentication attempt counters. While the counters are only cosmetic, this action removes evidence of brute‑force or other authentication‑related attacks, undermining forensic investigation and audit trails. The flaw arises from the use of is_authorized_monitor in is_authorized/2 for all methods, bypassing the stricter authorization normally required for such operations, which relates to CWE-862.

Affected Systems

RabbitMQ Server is affected. Versions prior to 4.1.13, 4.2.7, and 4.3.0 are vulnerable. The issue is resolved in 4.1.13, 4.2.7, and 4.3.0.

Risk and Exploitability

The CVSS score of 2.3 indicates a low severity, and the EPSS score is not available, suggesting a limited exploitation probability. The vulnerability is not listed in the CISA KEV catalog. The attack requires a user who has the monitoring tag and the Management plugin enabled; the user does not need administrator privileges. Once the preconditions are met, the attacker can erase authentication attempt evidence by issuing a DELETE request, but cannot directly affect other data or configurations.

Generated by OpenCVE AI on September 23, 2026 at 21:25 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Update RabbitMQ Server to at least version 4.1.13, 4.2.7, or 4.3.0 to apply the official fix.
  • Restrict the use of the monitoring tag to administrators or remove the tag from all non‑admin users to prevent unauthorized metric resets.
  • Revoke the Management plugin for users that do not require it or audit the plugin configuration to ensure only trusted roles have access to the /api/auth/attempts endpoint.

Generated by OpenCVE AI on September 23, 2026 at 21:25 UTC.

Tracking

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Advisories

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History

Wed, 23 Sep 2026 21:45:00 +0000

Type Values Removed Values Added
First Time appeared Rabbitmq
Rabbitmq rabbitmq-server
Vendors & Products Rabbitmq
Rabbitmq rabbitmq-server

Wed, 23 Sep 2026 20:30:00 +0000

Type Values Removed Values Added
Description RabbitMQ is a messaging and streaming broker. Prior to versions 4.1.13, 4.2.7, and 4.3.0, is_authorized/2 uses is_authorized_monitor for all methods. DELETE resets rabbit_core_metrics:reset_auth_attempt_metrics(). Impact is cosmetic (counters only, no log erasure), but inconsistent with rabbit_mgmt_wm_reset.erl which requires admin for the analogous operation. A monitoring-tagged user can reset the per-node authentication-attempt counters via DELETE /api/auth/attempts/:node, erasing evidence of brute-force activity. The sibling endpoint wm_reset requires administrator. Preconditions include Management plugin enabled monitoring tag. This issue is fixed in versions 4.1.13, 4.2.7, and 4.3.0.
Title RabbitMQ: Monitoring-tag DELETE of auth-attempt metrics
Weaknesses CWE-862
References
Metrics cvssV4_0

{'score': 2.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N'}


Subscriptions

Rabbitmq Rabbitmq-server
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-09-23T20:09:28.198Z

Reserved: 2026-07-23T23:25:28.897Z

Link: CVE-2026-66069

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-23T21:16:59.073

Modified: 2026-09-23T21:16:59.073

Link: CVE-2026-66069

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-23T21:30:07Z

Weaknesses