# CVE-2021-24148: MStore API < 3.2.0 - Authentication Bypass With Sign In With Apple

> Unauthenticated attackers can bypass authentication and recover session cookies using only an email address in the MStore API WordPress plugin.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 Mar 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-99jg-2fvv-2jfq

## What is CVE-2021-24148?

CVE-2021-24148 is a critical authentication bypass vulnerability in Unknown MStore API, published on 18 Mar 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A business logic issue in the MStore API WordPress plugin, versions before 3.2.0, had an authentication bypass with Sign In With Apple allowing unauthenticated users to recover an authentication cookie with only an email address.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2021-24148?

It affects 1 product.


Products: Inspireui Mstore Api.

## How do I fix CVE-2021-24148?

No fix has been published for CVE-2021-24148 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-24148 being exploited?

There is no known exploitation of CVE-2021-24148 in the wild and no public exploit code.

## Other vulnerabilities in Unknown MStore API

- [CVE-2024-6328](https://insights.sbomify.com/CVE-2024-6328/): MStore API – Create Native Android & iOS Apps On The Cloud <= 4.14.7 - Authentication Bypass (critical 9.8)
- [CVE-2023-3277](https://insights.sbomify.com/CVE-2023-3277/): MStore API <= 4.10.7 - Unauthorized Account Access and Privilege Escalation (critical 9.8)
- [CVE-2023-3076](https://insights.sbomify.com/CVE-2023-3076/): MStore API < 3.9.9 - Unauthenticated Privilege Escalation (critical 9.8)
- [CVE-2023-3077](https://insights.sbomify.com/CVE-2023-3077/): MStore API < 3.9.8 - Unauthenticated Blind SQLi (critical 9.8)
- [CVE-2023-3197](https://insights.sbomify.com/CVE-2023-3197/): MStore API <= 4.0.1 - Unauthenticated SQL Injection (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-24148 and fix it if it is affected.

What it is: CVE-2021-24148 is a critical authentication bypass vulnerability in Unknown MStore API, published on 18 Mar 2021. 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-2021-24148 in the wild and no public exploit code.

Affected product: Unknown MStore API. 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-2021-24148/ (Markdown: https://insights.sbomify.com/CVE-2021-24148/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-24148
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-24148
- OSV: https://osv.dev/vulnerability/CVE-2021-24148

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-24148/
Summaries are generated and may contain mistakes; the official description above is the record.