Jenkins FP Plugin Arbitrary File Write via Stapler Binding
CVE-2026-84671 Published on September 2, 2026
Jenkins File Parameter Plugin 425.v3fa_801681b_5e and earlier allows writing files to arbitrary locations on the Jenkins controller file system through Stapler data binding, which can lead to remote code execution.
Vulnerability Analysis
CVE-2026-84671 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
What is a Directory traversal Vulnerability?
The software uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the software does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
CVE-2026-84671 has been classified to as a Directory traversal vulnerability or weakness.
Products Associated with CVE-2026-84671
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Affected Versions
Jenkins Project Jenkins File Parameter Plugin:- Before and including 425.v3fa_801681b_5e is affected.