VULNERABILITY INTELLIGENCE

CVE-2026-70427

CVSS score4.3 MEDIUM
EPSS probability0.66%
CISA KEVNot currently listed
Published2026-08-05
Last modified2026-09-08
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Description

Jenkins 2.575 and earlier, LTS 2.568.1 and earlier does not safely handle symbolic links with effectively empty names during the extraction of `.tar` and `.tar.gz` archives, allowing attackers able to control agent processes to provide crafted archives to the controller to write files to arbitrary locations on the file system, restricted only by file system access permissions of the user running Jenkins.

Weakness classification

  • CWE-59: Improper Link Resolution Before File Access ('Link Following')

Primary references