# CVE-2026-32856: Ellucian Banner Self-Service reflected XSS in dateConverter

Source: https://junglewise.ai/threats/cve-2026-32856-ellucian-banner-self-service-reflected-xss-in-dateconverter  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-09. Updated: 2026-06-09  
License: CC BY 4.0 with a link back

CVE-2026-32856 · Severity: medium · CVSS 6.1 · Published 2026-06-09

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.

Vendors: [Ellucian](https://junglewise.ai/threats/vendors/ellucian).

## Quick answers

**Is CVE-2026-32856 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-32856 being exploited in the wild.

**How severe is CVE-2026-32856?** Medium severity, with a CVSS score of 6.1, published 9 June 2026.

**Which products and versions are affected?** Ellucian Banner Self-Service Before April T2 release (2025-04-23).

**Is there a fix for CVE-2026-32856?** A patch was published on 2025-04-23: April T2 release addressed the vulnerability Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-32856 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-32856?** Check whether you run Ellucian Banner Self-Service at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## 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

## References

- [https://www.ellucian.com/assets/en/brochure/brochure-learn-more-about-ellucian-banner-self-service.pdf](https://www.ellucian.com/assets/en/brochure/brochure-learn-more-about-ellucian-banner-self-service.pdf)
- [https://www.ellucian.com/security-researcher-hall-of-fame](https://www.ellucian.com/security-researcher-hall-of-fame)
- [https://www.vulncheck.com/advisories/ellucian-banner-self-service-reflected-xss-via-dateconverter](https://www.vulncheck.com/advisories/ellucian-banner-self-service-reflected-xss-via-dateconverter)

## Related threats

- [Ellucian Banner Self-Service stored XSS in course search functionality](https://junglewise.ai/threats/cve-2026-47106-ellucian-banner-self-service-stored-xss-in-course-search)