# CVE-2026-90615: SourceCodester Class and Exam Timetabling System subject1.php cross site scripting

> Remote attackers can inject malicious scripts via the subject parameter in subject1.php, potentially compromising user sessions or executing code.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P`)
- **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:** 14 Sep 2026
- **Updated:** 15 Sep 2026
- **Also known as:** GHSA-3fp8-434r-4f6h

## What is CVE-2026-90615?

CVE-2026-90615 is a medium-severity cross-site scripting vulnerability in SourceCodester Class and Exam Timetabling System, published on 14 Sep 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

A security vulnerability has been detected in SourceCodester Class and Exam Timetabling System 1.0. This affects an unknown part of the file /subject1.php. Such manipulation of the argument subject leads to cross site scripting. The attack can be executed remotely. The exploit has been disclosed publicly and may be used.

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-2026-90615?


## How do I fix CVE-2026-90615?

No fix has been published for CVE-2026-90615 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-90615 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90615 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-90615 and fix it if it is affected.

What it is: CVE-2026-90615 is a medium-severity cross-site scripting vulnerability in SourceCodester Class and Exam Timetabling System, published on 14 Sep 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: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-90615 exists.

Affected product: SourceCodester Class and Exam Timetabling 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-2026-90615/ (Markdown: https://insights.sbomify.com/CVE-2026-90615/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-90615
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-90615
- OSV: https://osv.dev/vulnerability/CVE-2026-90615

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-90615/
Summaries are generated and may contain mistakes; the official description above is the record.