CVE-2023-32081Network attack vector

Unauthenticated subscriptions and publishing via pre-CONNECT frames

Published May 12, 2023 · Updated Jan 23, 2025

Improper authentication in Eclipse Vert.x STOMP 3.1.0 through 3.9.15 and 4.0.0 through 4.4.1 allows remote attackers to bypass login. StompServerImpl forwarded parsed TCP and WebSocket frames to the STOMP handler before requiring an initial CONNECT frame and successful CONNECTED response. Servers configured with an authentication handler are exposed, allowing unauthorized destination subscriptions and message publication.

CVSS severity6.5
Medium
EPSS probability0.51%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in Eclipse Vert.x STOMP 3.1.0 through 3.9.15 and 4.0.0 through 4.4.1 allows remote attackers to bypass login. StompServerImpl forwarded parsed TCP and WebSocket frames to the STOMP handler before requiring an initial CONNECT frame and successful CONNECTED response. Servers configured with an authentication handler are exposed, allowing unauthorized destination subscriptions and message publication.

The record

CVE
CVE-2023-32081
Published
May 12, 2023
Updated
Jan 23, 2025
Vendor
The Eclipse Foundation
Product
Vert.x STOMP
Classifications
CWE-287, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 12, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 23, 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=>= 3.1.0, < 3.9.16
  2. Affected versionversion=>= 4.0.0, < 4.4.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Eclipse Foundation · Vert.x STOMPversion=>= 3.1.0, < 3.9.16; version=>= 4.0.0, < 4.4.2

Published CVSS scores

6.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A: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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-287Improper Authentication
T1190Exploit Public-Facing Application

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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