🛡️ CVE-2026-67589 on Debian — qpid-proton

⚪ Unknown ✅ No Known Exploit OSV

N/A

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

A pre-authentication attacker could leverage type size/count handling to cause excessive allocation leading to 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.

Distribution advisory

This page covers CVE-2026-67589 as tracked by Debian, for the package qpid-proton. No fixed version has been recorded for this distribution yet.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high. (rating taken from the base CVE record.)

Weakness class

DEBIAN-CVE-2026-67589 is classified as CWE-789: Memory Allocation with Excessive Size Value. The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.

Affected software

DEBIAN-CVE-2026-67589 is recorded against 1 package.

qpid-proton

Timeline and source

Published on 5 August 2026 and last revised on 6 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

security-tracker.debian.org (Advisory)

Details

Severity Unknown

CVSS Score N/A

CVSS Vector N/A

CWE N/A

Public Exploit ✅ No

Source OSV

Published 2026-08-05

Updated 2026-08-11

Modified 2026-08-06

Fix URL N/A

Affected Packages

Software	From version	Fixed in
qpid-proton	—	—

References

ADVISORY https://security-tracker.debian.org/tracker/CVE-2026-67589

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