CVE-2026-57217
RabbitMQ: Topic authorization can lead to cross-tenant routing-key bypass
CVSS Score
0.0
EPSS Score
0.3%
EPSS Percentile
19th
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.
| CWE | CWE-863 |
| Vendor | rabbitmq |
| Product | rabbitmq-server |
| Published | Jul 10, 2026 |
| Last Updated | Jul 13, 2026 |
Stay Ahead of the Next One
Get instant alerts for rabbitmq rabbitmq-server
Be the first to know when new unknown vulnerabilities affecting rabbitmq rabbitmq-server are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
Affected Versions
rabbitmq / rabbitmq-server
>= 4.2.0, < 4.2.6 >= 4.1.0, < 4.1.11 >= 4.0.0, < 4.0.21 >= 3.13.0, < 3.13.15
References
github.com: https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-gpvw-75h5-3wvx github.com: https://github.com/rabbitmq/rabbitmq-server/pull/15941 github.com: https://github.com/rabbitmq/rabbitmq-server/pull/15943 github.com: https://github.com/rabbitmq/rabbitmq-server/commit/94f1d33a70fcfa09006649599e79fc92786a2d36 github.com: https://github.com/rabbitmq/rabbitmq-server/commit/ce1f682aa6b398820c5e3ce1ff7435184027c82c github.com: https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6