CVE-2026-106451 yawkat LZ4 Java: Native library extraction to a shared temporary directory is vulnerable to file replacement by another local user

yawkat LZ4 Java provides LZ4 compression for Java. From 1.7.0 until 1.11.4, net.jpountz.util.Native.load uses File.createTempFile to create an exclusive temporary .lck file but derives the native-library path by removing the suffix, then FileOutputStream opens that predictable path without...

CVE-2026-106450 yawkat LZ4 Java: LZ4FrameInputStream reallocates block buffers for every frame, allowing CPU and GC amplification from small inputs

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...

CVE-2026-106450 yawkat LZ4 Java: LZ4FrameInputStream reallocates block buffers for every frame, allowing CPU and GC amplification from small inputs

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...

CVE-2026-106450

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...

CVE-2026-106450

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...

CVE-2026-106450 yawkat LZ4 Java: LZ4FrameInputStream reallocates block buffers for every frame, allowing CPU and GC amplification from small inputs

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...

CVE-2026-106450

Prior to version 1.11.4 , yawkat LZ4 Java is vulnerable to a resource exhaustion issue in the net.jpountz.lz4.LZ4FrameInputStream.readHeader() function. When processing a maximum-block-size frame header in the default concatenated-frame mode, the component allocates two new 4 MiB block buffers. A...

CVE-2026-106449 yawkat LZ4 Java: LZ4BlockInputStream with stopOnEmptyBlock=false recurses once per empty block, causing StackOverflowError

yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.4, net.jpountz.lz4.LZ4BlockInputStream configured with stopOnEmptyBlock set to false handles each well-formed empty LZ4Block by recursively calling refill, allowing a long sequence of empty blocks in an attacker-controlled compresse...

CVE-2026-106449

yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.4, net.jpountz.lz4.LZ4BlockInputStream configured with stopOnEmptyBlock set to false handles each well-formed empty LZ4Block by recursively calling refill, allowing a long sequence of empty blocks in an attacker-controlled compresse...

CVE-2026-106449 yawkat LZ4 Java: LZ4BlockInputStream with stopOnEmptyBlock=false recurses once per empty block, causing StackOverflowError

yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.4, net.jpountz.lz4.LZ4BlockInputStream configured with stopOnEmptyBlock set to false handles each well-formed empty LZ4Block by recursively calling refill, allowing a long sequence of empty blocks in an attacker-controlled compresse...

CVE-2026-106449

yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.4, net.jpountz.lz4.LZ4BlockInputStream configured with stopOnEmptyBlock set to false handles each well-formed empty LZ4Block by recursively calling refill, allowing a long sequence of empty blocks in an attacker-controlled compresse...

CVE-2026-106449 yawkat LZ4 Java: LZ4BlockInputStream with stopOnEmptyBlock=false recurses once per empty block, causing StackOverflowError

yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.4, net.jpountz.lz4.LZ4BlockInputStream configured with stopOnEmptyBlock set to false handles each well-formed empty LZ4Block by recursively calling refill, allowing a long sequence of empty blocks in an attacker-controlled compresse...

CVE-2026-106449

The yawkat LZ4 Java library (prior to version 1.11.4 ) contains a vulnerability in the net.jpountz.lz4.LZ4BlockInputStream component. When configured with stopOnEmptyBlock=false , the component recursively calls refill() for each well-formed empty LZ4Block. An attacker providing a compressed stre...

CLEANSTART-2026-LJ57058 yawkat LZ4 Java provides LZ4 compression for Java

Security vulnerability affects the sonarqube package. yawkat LZ4 Java provides LZ4 compression for Java...

CVE-2026-106449: Uncontrolled Recursion

yawkat LZ4 Java provides LZ4 compression for Java. Prior to 1.11.4, net.jpountz.lz4.LZ4BlockInputStream configured with stopOnEmptyBlock set to false handles each well-formed empty LZ4Block by recursively calling refill, allowing a long sequence of empty blocks in an attacker-controlled compresse...

PT-2026-107185

Name of the Vulnerable Software and Affected Versions yawkat LZ4 Java versions prior to 1.11.4 Description A flaw exists in the net.jpountz.lz4.LZ4BlockInputStream class when the stopOnEmptyBlock variable is set to false. In this configuration, the system handles well-formed empty LZ4Blocks by...

PT-2026-107239

Name of the Vulnerable Software and Affected Versions yawkat LZ4 Java versions prior to 1.11.4 Description The readHeader function in net.jpountz.lz4.LZ4FrameInputStream allocates two 4 MiB block buffers when a maximum-block-size frame header is processed. In the default concatenated-frame mode, ...

PT-2026-107240

Name of the Vulnerable Software and Affected Versions yawkat LZ4 Java versions 1.7.0 through 1.11.3 Description The net.jpountz.util.Native.load function creates an exclusive temporary .lck file using File.createTempFile but derives the native-library path by removing the suffix. Subsequently,...

CVE-2026-106450: Allocation of Resources Without Limits or Throttling

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...

CVE-2026-106451: Time-of-check Time-of-use (TOCTOU) Race Condition

yawkat LZ4 Java provides LZ4 compression for Java. From 1.7.0 until 1.11.4, net.jpountz.util.Native.load uses File.createTempFile to create an exclusive temporary .lck file but derives the native-library path by removing the suffix, then FileOutputStream opens that predictable path without...