It was found that icedtea-web though 1.7.2 and 1.8.2 did not properly sanitize paths from <jar/> elements in JNLP files. An attacker could trick a victim into running a specially crafted application and use this flaw to upload arbitrary files to arbitrary locations in the context of the user.
Exploitability
AV:NAC:LPR:NUI:RScope
S:CImpact
C:NI:HA:L8.2/CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:LInjection
Input Validation