CVE-2020-17534: Apache Html/java API

High severity, CVSS 7.0. EPSS: 0.4% chance of exploitation in the next 30 days.

There exists a race condition between the deletion of the temporary file and the creation of the temporary directory in `webkit` subproject of HTML/Java API version 1.7. A similar vulnerability has recently been disclosed in other Java projects and the fix in HTML/Java API version 1.7.1 follows theirs: To avoid local privilege escalation version 1.7.1 creates the temporary directory atomically without dealing with the temporary file: https://github.com/apache/netbeans-html4j/commit/fa70e507e5555e1adb4f6518479fc408a7abd0e6

Affected products

• Apache Html/java API: version 1.7 only

Published 2021-01-11. Last modified 2026-06-17.