CVE-2026-17106 (GCVE-0-2026-17106)

Vulnerability from cvelistv5 – Published: 2026-08-18 18:35 – Updated: 2026-08-19 03:56
VLAI
Title
Tar extraction in moby/go-archive can write outside the destination directory via link following
Summary
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.
Severity
7.1 (High)
CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: poc Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-18 00:00 UTC
CWE
  • CWE-59 - Improper Link Resolution Before File Access ('Link Following')
Assigner
References
Impacted products
Vendor Product Version CPE status
moby go-archive Affected: 0 , < 0.3.0 (semver)
guessed Create a notification for this product.
Docker Docker Sandboxes Affected: 0 , < 0.38.0 (semver)
    cpe:2.3:a:docker:docker_sandboxes:*:*:*:*:*:*:*:*
Create a notification for this product.
Docker Docker Desktop Affected: 0 , < 4.86.0 (semver)
    cpe:2.3:a:docker:desktop:*:*:*:*:*:*:*:*
Create a notification for this product.
Docker Docker Engine Affected: 0 , < 29.7.0 (semver)
guessed Create a notification for this product.
Docker Docker CLI Affected: 0 , < 29.7.0 (semver)
guessed Create a notification for this product.
Docker Docker Compose Affected: 0 , < 5.4.0 (semver)
guessed Create a notification for this product.
Credits
Ron Masas (Imperva) and other independent reports
Show details on NVD website
To clipboard 

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.