Medium · CVSS 6.0CVE-2026-106122

RabbitMQ: Malformed UTF-8 in shortstr properties permanently disables RPC consumersCVE-2026-106122

Answer in brief

CVE-2026-106122 records a Medium severity (CVSS 6.0) vulnerability in RabbitMQ: Malformed UTF-8 in shortstr properties permanently disables RPC consumers. The current sources do not mark it as known exploited. The current feed maps com.rabbitmq/amqp-client (generic), rabbitmq/rabbitmq-java-client (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Oct 6, 2026Updated Oct 6, 2026Source checked Oct 6, 2026First seen by HOL Oct 6, 2026Material review Oct 6, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 6.0
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 6.0. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps com.rabbitmq/amqp-client (generic), rabbitmq/rabbitmq-java-client (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
com.rabbitmq/amqp-clientgeneric	<5.36.0	5.36.0
rabbitmq/rabbitmq-java-clientgeneric	<5.36.0	5.36.0

Recommended response

Check inventory. Check lockfiles and deployed manifests for com.rabbitmq/amqp-client, rabbitmq/rabbitmq-java-client.
Review the reported fix. Update com.rabbitmq/amqp-client to 5.36.0; rabbitmq/rabbitmq-java-client to 5.36.0 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Oct 6, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 6, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 6, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.