Loop with Unreachable Exit Condition ('Infinite Loop') Affecting logstash-9.4 package, versions <9.4.7-r8


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.5% (42nd percentile)

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  • Snyk IDSNYK-WOLFILATEST-LOGSTASH94-20886760
  • published14 Oct 2026
  • disclosed6 Oct 2026

Introduced: 6 Oct 2026

NewCVE-2026-106121  (opens in a new tab)
CWE-835  (opens in a new tab)

How to fix?

Upgrade Wolfi logstash-9.4 to version 9.4.7-r8 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream logstash-9.4 package and not the logstash-9.4 package as distributed by Wolfi. See How to fix? for Wolfi relevant fixed versions and status.

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 Base Scores

version 3.1