CVE-2026-106121RabbitMQ: JSONReader in the default JSON-RPC mapper never terminates on truncated input, causing DoS
Updated under an hour ago ()
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It affects rabbitmq-java-client and 2 other products. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.50%, higher than 41% of scored CVEs.
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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 replies. A truncated string causes the parser to append replacement end markers until heap exhaustion, while a line comment without a terminating newline can keep a thread consuming CPU indefinitely, resulting in denial of service. This issue is fixed in version 5.37.0.
- CVSS
- 4.9 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-835
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.50% (percentile 41)
- Assigned by
- GitHub_M
- NVD analysis
- Analyzed
- Record last updated
- Oct 6, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
rabbitmq rabbitmq-java-client rabbitmq:java_client (from the name) | before 5.36.1 | CNA record |
com.rabbitmq amqp-client com.rabbitmq:amqp_client (from the name) | before 5.36.1 | CNA record |
vmware rabbitmq_java_client vmware:rabbitmq_java_client | before 5.37.0 | NVD |
References
- https://github.com/rabbitmq/rabbitmq-java-client/security/advisories/GHSA-cqgh-8p3p-mx4mx-refsource-confirm, exploit, vendor-advisory
- https://github.com/rabbitmq/rabbitmq-java-client/pull/2100x-refsource-misc, patch
- https://github.com/rabbitmq/rabbitmq-java-client/commit/25fad817291feff3195c32620117d295598f8b41x-refsource-misc, patch
- https://github.com/rabbitmq/rabbitmq-java-client/releases/tag/v5.37.0x-refsource-misc, release-notes
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.