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Cross-site Scripting occurrences in Chained Quiz

The Chained Quiz plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'date' parameter on the 'chainedquiz_list' page in versions up to, and including, 1.3.2.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. (2022-12-02, CVE-2022-4215)

The Chained Quiz plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'datef' parameter on the 'chainedquiz_list' page in versions up to, and including, 1.3.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. (2022-12-02, CVE-2022-4208)

The Chained Quiz plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'dn' parameter on the 'chainedquiz_list' page in versions up to, and including, 1.3.2.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. (2022-12-02, CVE-2022-4213)

The Chained Quiz plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'dnf' parameter on the 'chainedquiz_list' page in versions up to, and including, 1.3.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. (2022-12-02, CVE-2022-4210)

The Chained Quiz plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'emailf' parameter on the 'chainedquiz_list' page in versions up to, and including, 1.3.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. (2022-12-02, CVE-2022-4211)

The Chained Quiz plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'ip' parameter on the 'chainedquiz_list' page in versions up to, and including, 1.3.2.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. (2022-12-02, CVE-2022-4214)

The Chained Quiz plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'ipf' parameter on the 'chainedquiz_list' page in versions up to, and including, 1.3.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. (2022-12-02, CVE-2022-4212)

The Chained Quiz plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the 'pointsf' parameter on the 'chainedquiz_list' page in versions up to, and including, 1.3.2 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. (2022-12-02, CVE-2022-4209)

The Chained Quiz plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'api_key' parameter in versions up to, and including, 1.3.2.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers with administrative privileges to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. (2022-12-02, CVE-2022-4217)

The Chained Quiz plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'facebook_appid' parameter in versions up to, and including, 1.3.2.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers with administrative privileges to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. (2022-12-02, CVE-2022-4216)

The Chained Quiz WordPress plugin before 1.2.7.2 does not properly sanitize or escape inputs in the plugin's settings. (2021-10-11, CVE-2021-24690)

The chained-quiz plugin 1.1.8.1 for WordPress has reflected XSS via the wp-admin/admin-ajax.php total_questions parameter. (2020-01-17, CVE-2020-7104)

Why Cross-site Scripting can be dangerous

Cross site scripting is an attack where a web page executes code that is injected by an adversary. It usually appears, when users input is presented. This attack can be used to impersonate a user, take over control of the session, or even steal API keys.

The attack can be executed e.g. when you application injects the request parameter directly into the HTML code of the page returned to the user:

https://server.com/confirmation?message=Transaction+Complete

what results in:

<span>Confirmation: Transaction Complete</span>

In that case the message can be modified to become a valid Javascript code, e.g.:

https://server.com/confirmation?message=<script>dangerous javascript code here</script>

and it will be executed locally by the user's browser with full access to the user's personal application/browser data:

<span>Confirmation: <script>dangerous javascript code here</script></span>

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