CVE-2026-32856 Ellucian Banner Self-Service Reflected XSS via dateConverter
Unauthenticated attackers can execute arbitrary JavaScript via reflected XSS in the dateConverter endpoint, potentially stealing session cookies.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-32856?
CVE-2026-32856 is a medium-severity cross-site scripting vulnerability in Ellucian Banner Self-Service, published on 9 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Ellucian Banner Self-Service before the April T2 release (2025-04-23) contains a reflected cross-site scripting vulnerability that allows unauthenticated attackers to execute arbitrary JavaScript in a victim's browser by injecting unsanitized input through the toDateFormat request parameter in the dateConverter endpoint. Attackers can craft a malicious URL targeting the unauthenticated dateConverter endpoint to steal session cookies or perform other malicious actions in the context of the victim's browser session.
Weakness: CWE-79
Which versions are affected by CVE-2026-32856?
How do I fix CVE-2026-32856?
No fix has been published for CVE-2026-32856 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-32856 being exploited?
There is no known exploitation of CVE-2026-32856 in the wild and no public exploit code.
Sources
Also known as GHSA-x7x7-w9rf-g664.