# 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.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N`)
- **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 available:** No
- **Published:** 9 Jun 2026
- **Updated:** 14 Jul 2026
- **Also known as:** GHSA-x7x7-w9rf-g664

## 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 (Improper Neutralization of Input During Web Page Generation)

## 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.

## Is CVE-2026-32856 being exploited?

There is no known exploitation of CVE-2026-32856 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-32856 and fix it if it is affected.

What it is: 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.
Exploitation: There is no known exploitation of CVE-2026-32856 in the wild and no public exploit code.

Affected product: Ellucian Banner Self-Service. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-32856/ (Markdown: https://insights.sbomify.com/CVE-2026-32856/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-32856
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-32856
- OSV: https://osv.dev/vulnerability/CVE-2026-32856

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-32856/
Summaries are generated and may contain mistakes; the official description above is the record.