CVE-2025-30219

Browser code execution via unescaped vhost notification

Published Mar 25, 2025 · Updated Mar 26, 2025

Stored XSS in RabbitMQ Server before 4.0.3 allows local users with node-data access to execute JavaScript in management UI users' browsers. When a virtual host fails to start, the management UI notification inserts its on-disk name without escaping, allowing a script-bearing name to execute. Exploitation requires privileged modification of virtual-host data and a startup failure; the result is script execution in an authenticated operator's browser.

CVSS severity6.1
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in RabbitMQ Server before 4.0.3 allows local users with node-data access to execute JavaScript in management UI users' browsers. When a virtual host fails to start, the management UI notification inserts its on-disk name without escaping, allowing a script-bearing name to execute. Exploitation requires privileged modification of virtual-host data and a startup failure; the result is script execution in an authenticated operator's browser.

The record

CVE
CVE-2025-30219
Published
Mar 25, 2025
Updated
Mar 26, 2025
Vendor
RabbitMQ
Product
RabbitMQ Server
Classifications
CWE-79, T1203
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Mar 25, 2025CVE publishedPublication date reported by the CVE source.
  2. Mar 26, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 4.0.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

RabbitMQ · RabbitMQ Serverversion=< 4.0.3

Published CVSS scores

6.1GitHubCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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