Resource Exhaustion Affecting confluent-kafka package, versions <8.4.0.269-r1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.52% (41st percentile)

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  • Snyk IDSNYK-WOLFILATEST-CONFLUENTKAFKA-18137245
  • published21 Jul 2026
  • disclosed17 Jul 2026

Introduced: 17 Jul 2026

NewCVE-2026-56741  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Wolfi confluent-kafka to version 8.4.0.269-r1 or higher.

NVD Description

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

JLine is a Java library for handling console input. Prior to 3.30.14, 4.0.16, and 4.2.1, the JLine3 Telnet server remote-telnet module does not apply an upper bound to terminal dimensions received via the Telnet NAWS option, and TelnetIO.handleNAWS() in TelnetIO.java:856-879 reads client-supplied width and height as 16-bit unsigned integers and passes values such as 65535x65535 to setTerminalGeometry(), allowing an unauthenticated remote attacker to repeatedly alternate values and trigger continuous expensive rendering work that causes CPU exhaustion and denial of service. This issue is fixed in versions 3.30.14, 4.0.16, and 4.2.1.

CVSS Base Scores

version 3.1