Vulnerability · Published Aug 5, 2026 · Assigned by apache
CVE-2026-67592Apache Qpid ProtonJ2: Unable to govern the maximum number of transfer frames per incoming delivery
High 7.5
In plain English
A high-severity resource allocation without limits in Apache Qpid ProtonJ2 from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.7% (higher than 55% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.7%top 45.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | qpid-proton | no fix listed | DEBIAN-CVE-2026-67592 |
| Debian:13 | qpid-proton | no fix listed | DEBIAN-CVE-2026-67592 |
| Debian:14 | qpid-proton | no fix listed | DEBIAN-CVE-2026-67592 |
| Ubuntu:22.04:LTS | qpid-proton | no fix listed | UBUNTU-CVE-2026-67592 |
| Ubuntu:24.04:LTS | qpid-proton | no fix listed | UBUNTU-CVE-2026-67592 |
| Ubuntu:26.04:LTS | qpid-proton | no fix listed | UBUNTU-CVE-2026-67592 |
| Ubuntu:26.10 | qpid-proton | no fix listed | UBUNTU-CVE-2026-67592 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Qpid ProtonJ2 | 0 – through 1.1.0 |
Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H