CVE-2026-25768: LavinMQ is missing vhost access control

Severity: medium (CVSS 6.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-02-12 · updated 2026-06-17
Weakness: CWE-862

Description

LavinMQ is a high-performance message queue & streaming server. Before 2.6.6, an authenticated user could access metadata in the broker they should not have access to. This vulnerability is fixed in 2.6.6.

Affected products

cloudamqp lavinmq: before 2.6.6 — fixed in 2.6.6

How to fix

Upgrade to a fixed version: cloudamqp lavinmq 2.6.6. Check the vendor advisory for mitigations.

References

https://github.com/cloudamqp/lavinmq/commit/e871f8d0a53685f04e39e6410a2421c1f82803b0
https://github.com/cloudamqp/lavinmq/pull/1669
https://github.com/cloudamqp/lavinmq/security/advisories/GHSA-r2mh-8vq6-qf7m

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