Tukaani-project vulnerabilities

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Published CVEs affecting Tukaani-project products: 1 record(s), with severity, exploitation and fixes.

Xz 1

Exploited only (KEV) →

CVE-2026-34743 Medium · 5.3 CWE-122 Apr 2, 2026

XZ Utils: Buffer overflow in lzma_index_append()

XZ Utils provide a general-purpose data-compression library plus command-line tools. Prior to version 5.8.3, if lzma_index_decoder() was used to decode an Index that contained no Records, the resulting lzma_index was left in a state where where a subsequent lzma_index_append() would allocate too little memory, and a buffer overflow would occur. This issue has been patched in version 5.8.3.