CVE-2026-106122: CWE-172: Encoding Error in rabbitmq rabbitmq-java-client
Description
The RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes. Prior to 5.36.0, ValueReader.readShortstr decodes malformed UTF-8 bytes into replacement characters that can re-encode beyond the AMQP shortstr limit enforced by ValueWriter.writeShortstr. An attacker who can submit an RPC message with a malformed echoed property can cause reply publication in RpcServer.mainloop() or tutorial-style consumers to throw an unchecked exception before acknowledgement. The broker requeues the message, allowing the same message to disable replacement consumers until the queue is purged. This issue is fixed in version 5.36.0.
CVSS v4.0
Score 6.0medium
Affected software
rabbitmq
rabbitmq-java-client
com.rabbitmq
amqp-client
pkg:maven/com.rabbitmq/rabbitmq-java-clientRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The RabbitMQ Java client library's ValueReader.readShortstr method improperly decodes malformed UTF-8 bytes into replacement characters that can exceed the AMQP shortstr length limit enforced by ValueWriter.writeShortstr. An attacker able to submit an RPC message with a malformed echoed property can trigger an unchecked exception in RpcServer.mainloop() or tutorial-style consumers before message acknowledgement. This causes the broker to requeue the message repeatedly, effectively disabling replacement consumers until the queue is purged. The vulnerability is resolved in version 5.36.0.
Potential Impact
An attacker with the ability to send RPC messages containing malformed UTF-8 properties can cause the RabbitMQ Java client to throw unchecked exceptions, leading to message requeueing and denial of service for consumers until manual queue purging occurs. This disrupts normal message processing but does not directly compromise confidentiality or integrity.
Mitigation Recommendations
Upgrade to rabbitmq-java-client version 5.36.0 or later where this issue is fixed. No other mitigations are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-10-06T15:33:55.334Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ac53b952cdf04f656d07135
Added to database: 10/06/2026, 18:19:01 UTC
Last enriched: 10/06/2026, 18:33:32 UTC
Last updated: 10/06/2026, 19:04:17 UTC
Views: 6
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.