CVE-2026-68077 in Qpid Broker-J
Summary
by MITRE • 08/05/2026
An authenticated attacker can craft a disposition frame with large or illegal ranges causing excessive CPU usage due to naive range handling, leading to denial of service.
This issue affects Apache Qpid Broker-J: through 10.0.1.
Users are recommended to upgrade to version 10.1.0, which fixes the issue.
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Analysis
by VulDB Data Team • 08/05/2026
The vulnerability under discussion represents a denial of service weakness in Apache Qpid Broker-J that stems from inadequate handling of disposition frame ranges within the AMQP protocol implementation. This flaw manifests when an authenticated attacker crafts malicious disposition frames containing excessively large or invalid range values, triggering inefficient CPU consumption patterns that can ultimately overwhelm system resources and render the broker unavailable to legitimate users.
The technical root cause lies in the broker's naive approach to processing range parameters within disposition frames, which are part of the Advanced Message Queuing Protocol specification used for message delivery status reporting. When the broker receives these malformed frames, its range validation logic fails to properly constrain resource allocation or implement appropriate bounds checking mechanisms. This deficiency allows the attacker to craft frames that force the system to perform excessive computational work during range processing, creating a scenario where legitimate operations become starved of CPU cycles.
From an operational perspective this vulnerability presents significant risk to messaging infrastructure relying on Apache Qpid Broker-J, particularly in environments where message throughput is high or where the broker serves as a critical communication hub. The authenticated nature of the attack means that adversaries must first establish valid credentials, but once inside the system, they can leverage this weakness to disrupt service availability without requiring complex exploitation techniques. The impact extends beyond simple resource exhaustion as the excessive CPU usage can cascade into degraded performance for other components sharing the same system resources.
The vulnerability aligns with CWE-129, which addresses improper validation of range constraints, and demonstrates characteristics consistent with attack patterns found in the MITRE ATT&CK framework under the privilege escalation and denial of service categories. The issue specifically affects versions through 10.0.1, indicating that the developers identified and resolved the problematic range handling logic in version 10.1.0. Organizations running affected versions should prioritize upgrading to the patched release as the primary remediation strategy, as this update implements proper bounds checking and resource limiting mechanisms for range processing operations.
Security practitioners should also consider implementing additional monitoring around disposition frame processing within their messaging infrastructure to detect anomalous patterns that might indicate exploitation attempts. Network segmentation and access controls can help limit the potential impact of successful attacks by restricting which authenticated users can interact with the vulnerable components. The fix in version 10.1.0 represents a defensive programming approach that emphasizes proper input validation and resource management, aligning with industry best practices for preventing resource exhaustion attacks in distributed messaging systems.