CVE-2020-10688: Red Hat Fuse

Medium severity, CVSS 6.1. EPSS: 1.4% chance of exploitation in the next 30 days.

A cross-site scripting (XSS) flaw was found in RESTEasy in versions before 3.11.1.Final and before 4.5.3.Final, where it did not properly handle URL encoding when the RESTEASY003870 exception occurs. An attacker could use this flaw to launch a reflected XSS attack.

Affected products

• Red Hat Fuse: version 1.0 only
• Red Hat JBoss Enterprise Application Platform: affected versions not specified; version 7.3 only; version 7.4 only
• Red Hat Openshift Application Runtimes: affected versions not specified
• Red Hat Resteasy: before 3.11.1 (fixed in 3.11.1); from 4.5.0, before 4.5.3 (fixed in 4.5.3)

Published 2021-05-27. Last modified 2026-06-17.