VYPR
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Medium severity5.3OSV Advisory· Published Aug 28, 2025· Updated Apr 15, 2026

CVE-2025-58058

CVE-2025-58058

Description

xz is a pure golang package for reading and writing xz-compressed files. Prior to version 0.5.14, it is possible to put data in front of an LZMA-encoded byte stream without detecting the situation while reading the header. This can lead to increased memory consumption because the current implementation allocates the full decoding buffer directly after reading the header. The LZMA header doesn't include a magic number or has a checksum to detect such an issue according to the specification. Note that the code recognizes the issue later while reading the stream, but at this time the memory allocation has already been done. This issue has been patched in version 0.5.14.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
github.com/ulikunitz/xzGo
< 0.5.150.5.15

Affected products

294

Patches

Vulnerability mechanics

References

4

News mentions

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