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TL;DR
The Apache Software Foundation released version 10.1.1 to patch six Apache Qpid Broker-J vulnerabilities. These critical security defects include unauthenticated denial of service attacks and session fixation flaws. Administrators must upgrade their messaging brokers immediately to prevent potential system compromise.
- Total: 6 CVEs
- Severity: 1 Critical · 3 High · 1 Medium · 1 Unrated
- Actively exploited: None confirmed
- Highest severity: 9.8 (Critical · CVSSv3) — CVE-2026-92609
- Action: Apply the latest security updates now
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| CVE | CVSS (CVSSv3) | Type | Status |
|---|---|---|---|
| CVE-2026-92609 | 9.8 | CWE-384 | Not exploited |
| CVE-2026-92608 | 7.5 | CWE-248 | Not exploited |
| CVE-2026-92560 | 7.5 | CWE-770 | Not exploited |
| CVE-2026-92550 | 7.5 | CWE-789 | Not exploited |
| CVE-2026-92573 | 6.5 | CWE-409 | Not exploited |
| CVE-2026-92564 | Awaiting analysis | CWE-674 | Not exploited |
Why It Matters
Apache Qpid builds messaging tools that support multiple languages and operating systems. Thousands of enterprises rely on the AMQP protocol for reliable message processing. Therefore, these Apache Qpid Broker-J vulnerabilities present severe risks to enterprise messaging ecosystems. A successful attack could exhaust broker memory or lead to unauthorized session hijacking. Currently, security researchers have not confirmed any active exploitation in the wild. Additionally, no public proof-of-concept exploit code exists. However, unpatched servers remain exposed to pre-authentication resource consumption.
How The Attacks Work
These vulnerabilities target the AMQP decoding, message conversion, and HTTP management interfaces. The session fixation flaw occurs because the HTTP management interface fails to renew session identifiers after a successful login. This lapse allows remote attackers to reuse retained identifiers to gain unauthorized access.
Meanwhile, multiple denial of service flaws stem from unchecked resource allocation and type nesting. An unauthenticated attacker can send a malformed message featuring unbounded type nesting or excessive size declarations. The broker attempts to parse this data during pre-authentication, triggering a stack overflow or uncontrolled memory allocation. Finally, a decompression flaw in the shared GZIP component allows authenticated producers to exhaust memory. They accomplish this by sending compressed messages without decompressed-output limits.
Affected Versions
These security defects impact Apache Qpid Broker-J versions through 10.1.0. The flaws affect multiple core plugins, including the AMQP 0-8, AMQP 0-10, and AMQP 1.0 protocol modules. The defects also reside in the HTTP management and core broker plugins.
Patch Or Mitigation Steps
Administrators must update their messaging infrastructure immediately. The development team addressed these flaws in the 10.1.1 release. You can download the latest binaries directly from the official Apache Qpid download page. Furthermore, you should review the full Apache Qpid security advisories for complete mitigation details. Securing your broker prevents unauthorized disruption of essential messaging pipelines.
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