An issue was discovered in UiPath Assistant 21.4.4. User-controlled data supplied to the --process-start argument of the URI handler for uipath-assistant:// is not correctly encoded, resulting in attacker-controlled content being injected into the error message displayed (when the injected content does not match an existing process). A determined attacker could leverage this to execute JavaScript in the context of the Electron application.

References

• https://nvd.nist.gov/vuln/detail/CVE-2021-44042
• https://docs.uipath.com/robot/docs/release-notes-2021-10-4
• https://docs.uipath.com/robot/docs/uipath-assistant