yawkat lz4-java up to 1.11.3 Concatenated Frame Mode net.jpountz.lz4.LZ4FrameInputStream.readHeader resource consumption

Summaryinfo

A vulnerability labeled as problematic has been found in yawkat lz4-java up to 1.11.3. The affected element is the function net.jpountz.lz4.LZ4FrameInputStream.readHeader of the component Concatenated Frame Mode. Executing a manipulation can lead to resource consumption. This vulnerability appears as CVE-2026-106450. The attack may be performed from remote. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in yawkat lz4-java up to 1.11.3 and classified as problematic. This vulnerability affects the function net.jpountz.lz4.LZ4FrameInputStream.readHeader of the component Concatenated Frame Mode. The manipulation with an unknown input leads to a resource consumption vulnerability. The CWE definition for the vulnerability is CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. As an impact it is known to affect availability. CVE summarizes:

yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.4, net.jpountz.lz4.LZ4FrameInputStream readHeader() allocates two new 4 MiB block buffers whenever a maximum-block-size frame header is read, and the default concatenated-frame mode allows attacker-controlled streams containing many minimal empty frames to trigger roughly 8 MiB of allocation for every 11 input bytes. The stream produces no decompressed output while consuming CPU and garbage-collection time, so decompressed-size limits do not mitigate the issue; readSingleFrame mode is not affected. This issue is fixed in version 1.11.4.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-106450 since 10/06/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 1.11.4 eliminates this vulnerability.

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Productinfo

Type

• Programming Language Software

Vendor

• yawkat

Name

• lz4-java

Version

• 1.11.0
• 1.11.1
• 1.11.2
• 1.11.3

Website

• Product: https://github.com/yawkat/lz4-java/

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