What is CVE-2026-67592?

CVE-2026-67592 is a high-severity vulnerability in Apache Qpid Protonj2, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-08-05.

How severe is CVE-2026-67592?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Apache Qpid Protonj2

CVE-2026-67592

It was not possible to govern the maximum number of transfer frames per incoming delivery, enabling an authenticated attacker to cause excessive resource usage and potential denial of service. This issue affects Apache Qpid ProtonJ2: through 1.1.0. Users are recommended to upgrade to version 1.2.0, which fixes the issue

Published 2026-08-05 · last modified 2026-10-24.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.007 (54.6th percentile), scored 2026-11-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 54.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Apache Qpid Protonj2
Apache Software Foundation Qpid Protonj2 — versions 0

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

lists.apache.org/thread/b4pv9hfdk7ox78pss77sb4nzwjrvqhhz (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2026-67592?: CVE-2026-67592 is a high-severity vulnerability in Apache Qpid Protonj2, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-08-05.
How severe is CVE-2026-67592?: High severity. CVSS v3 base score is 7.5 out of 10.