CVE-2026-57214Public exploitNetwork attack vector

Stored XSS via unescaped internal-purpose title

Published Jul 10, 2026 · Updated Jul 10, 2026

Stored XSS in RabbitMQ Server 4.2.0 through 4.2.4 allows remote authenticated users to execute JavaScript in a viewer's browser. The management UI's _link_to function concatenates the stored x-internal-purpose queue or exchange argument into an HTML title attribute without escaping it. Declaration permission and a later visit to the Queues or Exchanges page are required; the script runs in that viewer's browser session.

CVSS severity7.1
High
EPSS probability0.39%
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 4.2.0 through 4.2.4 allows remote authenticated users to execute JavaScript in a viewer's browser. The management UI's _link_to function concatenates the stored x-internal-purpose queue or exchange argument into an HTML title attribute without escaping it. Declaration permission and a later visit to the Queues or Exchanges page are required; the script runs in that viewer's browser session.

The record

CVE
CVE-2026-57214
Published
Jul 10, 2026
Updated
Jul 10, 2026
Vendor
RabbitMQ
Product
RabbitMQ Server
Classifications
CWE-79, T1059.007
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=>= 4.2.0, < 4.2.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

RabbitMQ · RabbitMQ Serverversion=>= 4.2.0, < 4.2.5

Published CVSS scores

7.1GitHub, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

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)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1059.007Command and Scripting Interpreter: JavaScript

Public exploit references

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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