Cross-site Scripting (XSS) Affecting resteasy3.0 package, versions <3.0.26-4


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
1.39% (70th percentile)

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  • Snyk IDSNYK-ECHOLATEST-RESTEASY30-19512355
  • published3 Sept 2026
  • disclosed27 May 2021

Introduced: 27 May 2021

CVE-2020-10688  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade Echo:latest resteasy3.0 to version 3.0.26-4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream resteasy3.0 package and not the resteasy3.0 package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1