Executive brief
Ellucian Banner Self-Service, a platform used by higher education institutions for student and staff administrative tasks, is vulnerable to a security flaw that could allow attackers to run malicious code in a user's browser. By tricking a user into clicking a specially crafted link, an attacker could steal login session information or perform unauthorized actions on the user's behalf. This issue was addressed in the April 2025 update.
Technical details
A reflected cross-site scripting (XSS) vulnerability exists in the dateConverter endpoint of Ellucian Banner Self-Service. The root cause is the improper neutralization of user-supplied input through the 'toDateFormat' request parameter. An unauthenticated remote attacker can exploit this by crafting a malicious URL and inducing a victim to visit it. Successful exploitation allows the execution of arbitrary JavaScript in the context of the victim's browser session, potentially leading to session cookie theft or unauthorized actions. The vulnerability is fixed in the April T2 release (2025-04-23).
Affected products
- Ellucian Banner Self-Service Before April T2 release (2025-04-23)
Timeline
- 2025-04-23: patched: April T2 release addressed the vulnerability
- 2026-06-09: disclosed: CVE published and advisory released by VulnCheck