Apache Qpid Broker-J: Unbounded echo flow responses can lead to denial of service

published 2026-08-05 3 mo ago modified 2026-10-24 15 d ago also EUVD-2026-53099

cvss: 6.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 51%
public exploits: 0; none known

It was not possible to govern the rate at which the broker would respond to an echo flow, enabling an authenticated attacker to cause excessive resource usage and potential denial of service.

This issue affects Apache Qpid Broker-J: through 10.0.1.

Users are recommended to upgrade to version 10.1.0, which fixes the issue.

Patch / fix

fixed in 1

apache qpid_broker-j 10.1.0

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 3 mo ago (2026-08-05)

Exploit prediction

0.65% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA	3.1	6.5	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

Apache Software Foundation Apache Qpid Broker-J

Classification

Weakness

CWE-406 Insufficient Control of Network Message Volume (Network Amplification)

References

lists.apache.org /thread/tcnrv5nhmnsrzz92o4owxgycro6llt57
vendor-advisory, mailing-list
openwall.com /lists/oss-security/2026/08/04/20
mailing-list, third-party-advisory

Sources

CVE List CVE-2026-68080
NVD CVE-2026-68080

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary