CVE-2026-67592Network attack vector

Authenticated denial of service via unbounded transfers

Published Aug 5, 2026 · Updated Aug 5, 2026

Resource exhaustion in Apache Qpid ProtonJ2 1.1.0 and earlier allows remote authenticated users to interrupt service via AMQP transfers. Incoming-delivery processing accepts an unbounded number of transfer frames for one delivery, allowing frame-associated state to consume excessive resources. Exploitation requires access to an AMQP endpoint using the library and is limited to service interruption; no data disclosure or modification is reported.

CVSS severity7.5
High
EPSS probability0.48%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in Apache Qpid ProtonJ2 1.1.0 and earlier allows remote authenticated users to interrupt service via AMQP transfers. Incoming-delivery processing accepts an unbounded number of transfer frames for one delivery, allowing frame-associated state to consume excessive resources. Exploitation requires access to an AMQP endpoint using the library and is limited to service interruption; no data disclosure or modification is reported.

The record

CVE
CVE-2026-67592
Published
Aug 5, 2026
Updated
Aug 5, 2026
Vendor
The Apache Software Foundation
Product
Apache Qpid ProtonJ2
Classifications
CWE-770, CAPEC-130, T1499.003
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record 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=0 <=1.1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

The Apache Software Foundation · Apache Qpid ProtonJ2version=0 <=1.1.0

Published CVSS scores

7.5CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
CAPEC-130Excessive Allocation
T1499.003Application Exhaustion Flood

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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