CVE-2026-17106
HighCVSS 7.1Exploitation Probability (EPSS)
Low risk9th percentile - higher than 9% of all known CVEs
Summary
The tar extraction routines in moby/go-archive do not confine filesystem operations to the destination directory. An attacker who controls the contents of an archive can create or overwrite files at arbitrary paths writable by the extracting process.
Risk Assessment
The risk includes the possibility of overwriting critical system or application files, which could lead to system integrity compromise or malicious code execution.
Recommendation
It is recommended to update the moby/go-archive library to a patched version and be cautious when extracting archives from untrusted sources.
Original NVD description (English source)
The tar extraction routines in moby/go-archive (Unpack, UnpackLayer, Untar/UntarUncompressed, and the ApplyLayer helpers) do not confine filesystem operations to the destination directory. The extractor decides where each archive entry lands using lexical string checks and then performs the filesystem operation on a path that is resolved by the OS, so links introduced by the archive can be followed out of the destination directory. An attacker who controls the contents of an archive can create or overwrite files at arbitrary paths writable by the extracting process.