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CVE-2026-32856 Ellucian CVE debrief

CVE-2026-32856 is a reflected cross-site scripting (XSS) vulnerability in Ellucian Banner Self-Service before the April T2 release (2025-04-23). The vulnerability 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.

Vendor
Ellucian
Product
Banner Self-Service
CVSS
MEDIUM 5.1
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-09
Original CVE updated
2026-06-10
Advisory published
2026-06-09
Advisory updated
2026-06-10

Who should care

Administrators and users of Ellucian Banner Self-Service before the April T2 release (2025-04-23) should be aware of this vulnerability and take necessary actions to mitigate it.

Technical summary

The vulnerability has a CVSS score of 5.1 and a CVSS severity of MEDIUM. It was published on [cvePublishedAt] and modified on [cveModifiedAt]. The vulnerability is identified by CWE-79.

Defensive priority

MEDIUM

Recommended defensive actions

  • Update Ellucian Banner Self-Service to the April T2 release (2025-04-23) or later.
  • Implement input validation and sanitization for the toDateFormat request parameter in the dateConverter endpoint.
  • Use a web application firewall (WAF) to detect and prevent XSS attacks.

Evidence notes

The vendor of this product is likely Ellucian, based on the information provided in the source item.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-32856 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-32856

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-32856 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-32856

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.