CVE-2016-6347
RESTEasy: Use of the default exception handler in RESTEasy can lead to reflected XSS attack
Severity
ModerateRed Hat Product Security
CVSS 3.0
Review impact separately from score.
Published · September 1, 2016
Updated · August 5, 2026
Description
It was found that the default exception handler in RESTEasy did not properly validate user input. An attacker could use this flaw to launch a relected XSS attack.
Statement
This issue affects the versions of RESTEasy as shipped with Red Hat Satellite 6. Red Hat Product Security has rated this issue as having a security impact of Moderate. Additionally Red Hat Satellite does not use the default ExceptionMapper, and the custom exception handler does not allow return type of text/html. A future update may address this issue. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
CVSS score applicability
The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Mitigation
No mitigation is specified in collected source.
CVSS / CWE
CVSS 3.0 · 5.4CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
CVSS 2.0 · 4.3AV:N/AC:M/Au:N/C:N/I:P/A:N
CWE-20 · Improper Input Validation