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Uncontrolled Memory Allocation Affecting logstash-9.5 package, versions <9.5.2-r1

Severity

 Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.42% (35th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-LOGSTASH95-19235259
  • published25 Aug 2026
  • disclosed18 Aug 2026
Report a new vulnerability Found a mistake?

Introduced: 18 Aug 2026

NewCVE-2026-69219  (opens in a new tab)
CWE-789  (opens in a new tab)

How to fix?

Upgrade Chainguard logstash-9.5 to version 9.5.2-r1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream logstash-9.5 package and not the logstash-9.5 package as distributed by Chainguard. See How to fix? for Chainguard 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 5.33.1, src/main/java/com/rabbitmq/client/impl/ValueReader.java uses ValueReader.readBytes to accept a wire-declared contentLength below Integer.MAX_VALUE and allocate a byte array before checking the bytes available in the frame. A malicious AMQP peer can send a LongString or byte-array field with type tag S and a declared length such as 0x7FFFFFFE during the pre-authentication connection.start server-properties table, causing an approximately 2 GB allocation and OutOfMemoryError before readFully consumes data. The resulting memory exhaustion can terminate the JVM and cause denial of service. This issue is fixed in version 5.33.1.