CVE-2018-12542: Eclipse Vert.x

Critical severity, CVSS 9.8. EPSS: 2.2% chance of exploitation in the next 30 days.

In version from 3.0.0 to 3.5.3 of Eclipse Vert.x, the StaticHandler uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize '\' (forward slashes) sequences that can resolve to a location that is outside of that directory when running on Windows Operating Systems.

Affected products

• Eclipse Vert.x: from 3.0.0, up to and including 3.5.3

Published 2018-10-10. Last modified 2026-06-17.