RabbitMQ: Unsanitized vhost names allow for XSS in management UI
Summary
| CVE | CVE-2026-44839 |
|---|---|
| State | PUBLISHED |
| Assigner | GitHub_M |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-27 15:16:29 UTC |
| Updated | 2026-05-29 15:06:44 UTC |
| Description | RabbitMQ is a messaging and streaming broker. From 3.7.0 to before 4.1.2 and 4.0.13, This vulnerability is fixed in 4.1.2 and 4.0.13. |
Risk And Classification
Primary CVSS: v4.0 5.6 MEDIUM from [email protected]
CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS: 0.000430000 probability, percentile 0.136490000 (date 2026-05-29)
Problem Types: CWE-80 | CWE-80 CWE-80: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 4.0 | [email protected] | Secondary | 5.6 | MEDIUM | CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/C... |
| 4.0 | CNA | DECLARED | 5.6 | MEDIUM | CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N |
CVSS v4.0 Breakdown
Attack Vector
NetworkAttack Complexity
HighAttack Requirements
NonePrivileges Required
HighUser Interaction
ActiveConfidentiality
HighIntegrity
NoneAvailability
NoneSub Conf.
NoneSub Integrity
NoneSub Availability
NoneCVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Rabbitmq | Rabbitmq-server | affected >= 3.7.0, < 4.0.13 | Not specified |
| CNA | Rabbitmq | Rabbitmq-server | affected >= 4.1.0-alpha, < 4.1.2 | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| github.com/rabbitmq/rabbitmq-server/commit/7f54319279d1ece161ae0b4cdc6f0... | [email protected] | github.com | |
| github.com/rabbitmq/rabbitmq-server/security/advisories/GHSA-fh5r-jpm3-fjwp | [email protected] | github.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.