Archer 6.x through 6.10 (6.10.0.0) contains a reflected XSS vulnerability. A remote SAML-unauthenticated malicious Archer user could potentially exploit this vulnerability by tricking a victim application user into supplying malicious HTML or JavaScript code to the vulnerable web application; the malicious code is then reflected back to the victim and gets executed by the web browser in the context of the vulnerable web application.
In RSA Archer 6.9.SP1 P3, if some application functions are precluded by the Administrator, this can be bypassed by intercepting the API request at the /api/V2/internal/TaskPermissions/CheckTaskAccess endpoint. If the parameters of this request are replaced with empty fields, the attacker achieves access to the precluded functions.