CRITICAL Published March 29, 2024

CVE-2024-3094

Malicious code was discovered in the upstream tarballs of xz, starting with version 5.6.0. Through a series of complex obfuscations, the liblzma build process extracts a prebuilt object file from a disguised test file existing in the source code, which is then used to modify specific functions in the liblzma code. This results in a modified liblzma library that can be used by any software linked against this library, intercepting and modifying the data interaction with this library.

CVSS base score
10.0 (v3.1)
Severity
CRITICAL
Attack vector
Network
Weakness
CWE-506
Last modified
November 4, 2026
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

tukaani xz

References

View full NVD advisory →

Related reading

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