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Improper Input Validation 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
0.3% (23rd percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-LOGSTASH95-19235238
  • published25 Aug 2026
  • disclosed18 Aug 2026
Report a new vulnerability Found a mistake?

Introduced: 18 Aug 2026

NewCVE-2026-61634  (opens in a new tab)
CWE-20  (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 5.33.0, the AMQP connection tuning path records the negotiated AMQP frame_max value, but src/main/java/com/rabbitmq/client/impl/SocketFrameHandler.java and NettyFrameHandlerFactory continue to validate broker-controlled frame payload lengths against maxInboundMessageBodySize because the negotiated limit is not applied consistently through setMaxInboundFramePayloadSize. A malicious or compromised broker can send a method frame larger than the negotiated frame_max during or after connection establishment, causing the client to allocate and decode a protocol-invalid frame instead of rejecting it with MalformedFrameException. The protocol violation can disrupt the affected connection and cause client-side denial of service. This issue is fixed in version 5.33.0.