# CVE-2026-76999: SourceCodester CET Automated Grading System with AI Predictive Analytics index.php add_grade improper authorization

> Remote attackers can modify student grades by manipulating the student_id parameter due to missing authorization checks in the add_grade function.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X`)
- **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:** 20 Aug 2026
- **Updated:** 20 Aug 2026
- **Also known as:** GHSA-r7wc-g6pp-xg5m

## What is CVE-2026-76999?

CVE-2026-76999 is a medium-severity missing authorization vulnerability in SourceCodester CET Automated Grading System with AI Predictive Analytics, published on 20 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

A vulnerability was detected in SourceCodester CET Automated Grading System with AI Predictive Analytics 1.0. This affects the function add_grade of the file /index.php. Performing a manipulation of the argument student_id results in improper authorization. The attack can be initiated remotely.

Weakness: CWE-285 (Improper Authorization), CWE-266 (Incorrect Privilege Assignment)

## Which versions are affected by CVE-2026-76999?


## How do I fix CVE-2026-76999?

No fix has been published for CVE-2026-76999 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-76999 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-76999 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-76999 and fix it if it is affected.

What it is: CVE-2026-76999 is a medium-severity missing authorization vulnerability in SourceCodester CET Automated Grading System with AI Predictive Analytics, published on 20 Aug 2026. 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-2026-76999 exists.

Affected product: SourceCodester CET Automated Grading System with AI Predictive Analytics. 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-2026-76999/ (Markdown: https://insights.sbomify.com/CVE-2026-76999/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-76999
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-76999
- OSV: https://osv.dev/vulnerability/CVE-2026-76999

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-76999/
Summaries are generated and may contain mistakes; the official description above is the record.