PatchTheCVECVE-2026-106121: The RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with Rabbit
CVE-2026-106121 is a medium-severity flaw (CVSS 4.9) affecting rabbitmq java client. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes. Prior to 5.37.0, com.rabbitmq.tools.json.JSONReader.read() fails to terminate when input ends inside a quoted string or a line comment because its string and whitespace scanners do not stop at CharacterIterator.DONE. The default DefaultJsonRpcMapper passes JSON-RPC message bodies to this parser for JsonRpcServer and client repli
Why this priority
- Public exploit reference
A fixed release or distro patch exists.
Risk facts
| CVSS score | 4.9 (Medium) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | High |
| User interaction | None |
| EPSS exploit chance | 0.5% (top 55%) |
| CISA exploited list | No |
| Weakness | CWE-835 |
| Published | 2026-10-06 |
| Last modified | 2026-10-09 |
Last updated 2026-10-09 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-106121?
rabbitmq java client: upgrade to 5.37.0. Exact commands for each OS are on this page.
Is CVE-2026-106121 being exploited?
CVE-2026-106121 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-106121 affect?
CVE-2026-106121 affects rabbitmq java client. Severity is medium (CVSS 4.9). The RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes. Prior to 5.37.0, com.rabbitmq.tools.json.JSONReader.read() fails to terminate when input ends inside a quoted string or
How urgent is CVE-2026-106121?
Priority 33/100. Public exploit reference
Software pages
Java vulnerabilities · VMware vulnerabilities · RabbitMQ vulnerabilities
Related CVEs
- CVE-2026-106123 MEDIUM 5.5 UPGRADE The RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with Rabbit
- CVE-2026-106122 HIGH 7.5 UPGRADE The RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with Rabbit