# CVE-2023-49339: Missing authorization in n/a

> Attackers can access other students' card data by modifying the bannerId parameter in the student self-service endpoint.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 13 Feb 2024
- **Updated:** 7 May 2025
- **Also known as:** GHSA-m839-rvvg-g25r

## What is CVE-2023-49339?

CVE-2023-49339 is a medium-severity missing authorization vulnerability in n/a, published on 13 Feb 2024. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

Ellucian Banner 9.17 allows Insecure Direct Object Reference (IDOR) via a modified bannerId to the /StudentSelfService/ssb/studentCard/retrieveData endpoint.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2023-49339?

It affects 1 product.


Products: Ellucian Banner.

## How do I fix CVE-2023-49339?

No fix has been published for CVE-2023-49339 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-49339 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-49339 exists.

Public exploit code:

- Critical Security Vulnerability in Ellucian Banner System (github_poc): https://github.com/3zizme/CVE-2023-49339

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-49339 and fix it if it is affected.

What it is: CVE-2023-49339 is a medium-severity missing authorization vulnerability in n/a, published on 13 Feb 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-49339 exists.

Affected product: n/a. 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-2023-49339/ (Markdown: https://insights.sbomify.com/CVE-2023-49339/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-49339
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-49339
- OSV: https://osv.dev/vulnerability/CVE-2023-49339

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-49339/
Summaries are generated and may contain mistakes; the official description above is the record.