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.
CVSS
No CVSS.
References
Configurations
No configuration.
History
No history.
Information
Published : 2026-08-18 19:16
Updated : 2026-08-28 15:29
NVD link : CVE-2026-17106
Mitre link : CVE-2026-17106
CVE.ORG link : CVE-2026-17106
JSON object : View
Products Affected
No product.
CWE
CWE-59
Improper Link Resolution Before File Access ('Link Following')
