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Support Article

Pega website vulnerable to cross-site scripting (XSS) attacks

SA-39237

Summary



User observed that the Pega website was vulnerable to reflected, or non-persistent, cross-site scripting (XSS) attacks.

Error Messages



Not Applicable

Steps to Reproduce



After logging into the application, inject a script in a REST service like below:

http://[Hostname]:[port]/prweb/api/<img src=x onerror=alert(document.cookie)>/anything/anything
http://[Hostname]:[port]/prweb/PRRestService/<img src=x onerror=alert(document.cookie)>/anything/anything
http://[Hostname]:[port]/prweb/PRRestService/api/<img src=x onerror=alert(document.cookie)>/anything/anything

Root Cause



A defect in Pegasystems’ code or rules.
Issue is observed only in Firefox browser as it is unable to block XSS when an attacker injects a script in a REST service.

Resolution



Apply HFix-34976.
Suggest Edit

Published July 27, 2017 - Updated October 8, 2020

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