Bug 2511678 (CVE-2026-70427) - CVE-2026-70427 jenkins: Jenkins: Arbitrary file write via crafted archives and symbolic links
Summary: CVE-2026-70427 jenkins: Jenkins: Arbitrary file write via crafted archives an...
Keywords:
Status: NEW
Alias: CVE-2026-70427
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-05 18:02 UTC by OSIDB Bzimport
Modified: 2026-08-12 15:34 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-08-05 18:02:30 UTC 
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.
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