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

Q: What is CVE-2021-36906?

CVE-2021-36906 is a low-severity missing authorization vulnerability in ExpressTech Quiz And Survey Master (WordPress plugin), published on 3 Nov 2022. An attacker needs administrator access to exploit it, with no action from the victim.

Q: Is CVE-2021-36906 being exploited?

There is no known exploitation of CVE-2021-36906 in the wild and no public exploit code.

Q: How do I fix CVE-2021-36906?

No fix has been published for CVE-2021-36906 yet. Limit exposure of the affected software until one is available.

Low 2.7 Published 3 Nov 2022 Updated 28 Apr 2026

Attackers can access or modify other users' quiz data by manipulating object references, requiring plugin updates.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-36906?

CVE-2021-36906 is a low-severity missing authorization vulnerability in ExpressTech Quiz And Survey Master (WordPress plugin), published on 3 Nov 2022. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

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

Weakness: CWE-639

Which versions are affected by CVE-2021-36906?

It affects 1 product.

Products include Expresstech Quiz and Survey Master.

How do I fix CVE-2021-36906?

No fix has been published for CVE-2021-36906 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2021-36906 being exploited?

There is no known exploitation of CVE-2021-36906 in the wild and no public exploit code.

Sources

Also known as GHSA-9cgg-xr6f-vrg8.