# CVE-2026-5668: Cyber-III Student-Management-System add%20notice.php cross site scripting

> Remote attackers can execute arbitrary scripts via XSS in the admin notice module, potentially compromising user accounts.

- **Severity:** Medium 4.8 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 6 Apr 2026
- **Updated:** 6 Apr 2026
- **Also known as:** GHSA-v9r5-qwpw-xpgf

## What is CVE-2026-5668?

CVE-2026-5668 is a medium-severity cross-site scripting vulnerability in Cyber-III Student-Management-System, published on 6 Apr 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.

### Official description

A flaw has been found in Cyber-III Student-Management-System up to 1a938fa61e9f735078e9b291d2e6215b4942af3f. This affects an unknown part of the file /admin/Add%20notice/add%20notice.php. This manipulation of the argument $_SERVER['PHP_SELF'] causes cross site scripting. It is possible to initiate the attack remotely. The exploit has been published and may be used. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available. The project was informed of the problem early through an issue report but has not responded yet.

Weakness: CWE-94 (Improper Control of Generation of Code), CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-5668?


## How do I fix CVE-2026-5668?

No fix has been published for CVE-2026-5668 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-5668 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5668 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-5668 and fix it if it is affected.

What it is: CVE-2026-5668 is a medium-severity cross-site scripting vulnerability in Cyber-III Student-Management-System, published on 6 Apr 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-5668 exists.

Affected product: Cyber-III Student-Management-System. 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-2026-5668/ (Markdown: https://insights.sbomify.com/CVE-2026-5668/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-5668
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-5668
- OSV: https://osv.dev/vulnerability/CVE-2026-5668

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-5668/
Summaries are generated and may contain mistakes; the official description above is the record.