CVE-2021-20293

MEDIUM

RESTEasy < 4.6.0 - Reflected Cross-Site Scripting via @PathParam URL Encoding

Title source: llm
STIX 2.1

Description

A reflected Cross-Site Scripting (XSS) flaw was found in RESTEasy in all versions of RESTEasy up to 4.6.0.Final, where it did not properly handle URL encoding when calling @javax.ws.rs.PathParam without any @Produces MediaType. This flaw allows an attacker to launch a reflected XSS attack. The highest threat from this vulnerability is to data confidentiality and integrity.

References (2)

Core 2
Core References
Issue Tracking, Vendor Advisory x_refsource_misc
https://bugzilla.redhat.com/show_bug.cgi?id=1942819
Third Party Advisory x_refsource_confirm
https://security.netapp.com/advisory/ntap-20210727-0005/

Scores

CVSS v3 6.1
EPSS 0.0011
EPSS Percentile 29.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Details

CWE
CWE-79
Status published
Products (4)
netapp/oncommand_insight
org.jboss.resteasy/resteasy-bom 0Maven
org.jboss.resteasy/resteasy-core 0Maven
redhat/resteasy < 4.6.0
Published Jun 10, 2021
Tracked Since Feb 18, 2026