Vulnerability details
CVE-2026-57217
rabbitmq rabbitmq-server
RabbitMQ: Topic authorization can lead to cross-tenant routing-key bypass
CVSS 4.0
7.0High
Official description
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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 7.0High | 4.0 | CVEProject cvelistV5 (CNA) (GitHub_M) | 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 |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| rabbitmq | rabbitmq-server | >= 3.13.0, < 3.13.15 | CVEProject cvelistV5 (CNA) |
| rabbitmq | rabbitmq-server | >= 4.0.0, < 4.0.21 | CVEProject cvelistV5 (CNA) |
| rabbitmq | rabbitmq-server | >= 4.1.0, < 4.1.11 | CVEProject cvelistV5 (CNA) |
| rabbitmq | rabbitmq-server | >= 4.2.0, < 4.2.6 | CVEProject cvelistV5 (CNA) |
References and advisories
6- https://github.com/rabbitmq/rabbitmq-server/pull/15941 x_refsource_MISC
- https://github.com/rabbitmq/rabbitmq-server/pull/15943 x_refsource_MISC
- https://github.com/rabbitmq/rabbitmq-server/commit/94f1d33a70fcfa09006649599e79fc92786a2d36 x_refsource_MISC
- https://github.com/rabbitmq/rabbitmq-server/commit/ce1f682aa6b398820c5e3ce1ff7435184027c82c x_refsource_MISC
- https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.2.6 x_refsource_MISC
- https://github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-gpvw-75h5-3wvx x_refsource_CONFIRM
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Details
- Published
- 2026-07-10
- Last updated
- 2026-07-13
- State
- Published
- Assigner (CNA)
- GitHub_M
Exploit prediction (EPSS)
0.35%
Probability of exploitation in 30 days
28.9%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-863Incorrect Authorization