1. Home
  2. CVE Database
  3. CVE-2026-67589
HIGH · 7.5

CVE-2026-67589

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. Us...

Vulnerability 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.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Affected Products

VendorProductVersions
ApacheQpid Protonj2< 1.2.0

Related Weaknesses (CWE)

CWE-789

References

FAQ

What is CVE-2026-67589?

CVE-2026-67589 is a vulnerability with a CVSS score of 7.5 (HIGH). 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. Us...

How severe is CVE-2026-67589?

CVE-2026-67589 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-67589?

Check the references section above for vendor advisories and patch information. Affected products include: Apache Qpid Protonj2.