Information Exposure Affecting io.netty:netty-common Open this link in a new tab package, versions [4.0.0.Final,4.1.77.Final)

  • Attack Complexity


  • Confidentiality


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  • snyk-id


  • published

    8 May 2022

  • disclosed

    8 May 2022

  • credit

    Jonathan Leitschuh

How to fix?

Upgrade io.netty:netty-common to version 4.1.77.Final or higher.


Affected versions of this package are vulnerable to Information Exposure due to an incomplete fix to CVE-2021-21290, which still allowed one exploitable path. When netty's multipart decoders are used, local information disclosure can occur via the local system temporary directory, if temporary storing uploads on the disk is enabled. Note: To be vulnerable, a victim application has to run on a Unix-like operating system, and with Java 6 or below.