CVE-2026-67591

medium Apache
CVSS v3 Base Score
6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Score
0.4%
Exploitation probability in 30 days
Top 65% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Confidentiality
None
Integrity
None
Availability
High
Published: August 5, 2026 (32 days ago)
Last Modified: August 7, 2026
Vendor: Apache
Source: NVD

Description

An authenticated attacker could exceed the session flow control incoming window potentially leading to 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.

CWE

CWE-770

Affected Products

apache qpid protonj2

References

🔗 lists.apache.org 🔗 www.openwall.com