Pre-authentication crash via unbounded type nesting
Published Aug 5, 2026 · Updated Aug 5, 2026
Uncontrolled recursion in Apache Qpid Broker-J 10.0.1 and earlier allows remote attackers to crash the broker via nested AMQP types. The AMQP 1.0 protocol decoder recursively processes attacker-controlled nested type encodings without a depth limit, exhausting the Java thread stack. The malformed input is accepted before authentication, and the resulting StackOverflowError interrupts broker availability.
Summary
What happened
Uncontrolled recursion in Apache Qpid Broker-J 10.0.1 and earlier allows remote attackers to crash the broker via nested AMQP types. The AMQP 1.0 protocol decoder recursively processes attacker-controlled nested type encodings without a depth limit, exhausting the Java thread stack. The malformed input is accepted before authentication, and the resulting StackOverflowError interrupts broker availability.
The record
- CVE
- CVE-2026-68073
- Published
- Aug 5, 2026
- Updated
- Aug 5, 2026
- Vendor
- The Apache Software Foundation
- Product
- Apache Qpid Broker-J
- Classifications
- CWE-674, CAPEC-230, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 5, 2026CVE publishedPublication date reported by the CVE source.
- Aug 5, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=10.0.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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