# CVE-2021-46086: Missing authorization in n/a

> Attackers can modify submitted examination data by altering request parameters due to insecure permissions in the online examination system.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 25 Jan 2022
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-7vm3-67hm-9frc

## What is CVE-2021-46086?

CVE-2021-46086 is a high-severity missing authorization vulnerability in n/a, published on 25 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

xzs-mysql >= t3.4.0 is vulnerable to Insecure Permissions. The front end of this open source system is an online examination system. There is an unsafe vulnerability in the functional method of submitting examination papers. An attacker can use burpuite to modify parameters in the packet to destroy real data.

Weakness: CWE-276 (Incorrect Default Permissions)

## Which versions are affected by CVE-2021-46086?

It affects 1 product.


Products: Mindskip Xzs-Mysql.

## How do I fix CVE-2021-46086?

No fix has been published for CVE-2021-46086 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-46086 being exploited?

There is no known exploitation of CVE-2021-46086 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2024-29401](https://insights.sbomify.com/CVE-2024-29401/): Auth bypass in n/a (critical 9.8)
- [CVE-2025-1084](https://insights.sbomify.com/CVE-2025-1084/): Mindskip xzs-mysql 学之思开源考试系统 cross-site request forgery (medium 5.3)
- [CVE-2025-1082](https://insights.sbomify.com/CVE-2025-1082/): Mindskip xzs-mysql 学之思开源考试系统 Exam Edit edit cross site scripting (medium 5.1)
- [CVE-2025-1083](https://insights.sbomify.com/CVE-2025-1083/): Mindskip xzs-mysql 学之思开源考试系统 CORS cross-domain policy (low 2.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-46086 and fix it if it is affected.

What it is: CVE-2021-46086 is a high-severity missing authorization vulnerability in n/a, published on 25 Jan 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-46086 in the wild and no public exploit code.

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-2021-46086/ (Markdown: https://insights.sbomify.com/CVE-2021-46086/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-46086
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-46086
- OSV: https://osv.dev/vulnerability/CVE-2021-46086

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-46086/
Summaries are generated and may contain mistakes; the official description above is the record.