Showdoc Cross-site Scripting

Stored XSS via File Upload in star7th/showdoc in GitHub repository star7th/showdoc prior to 2.4.10. (2022-03-15, CVE-2022-0966)

Stored XSS via File Upload in star7th/showdoc in star7th/showdoc in GitHub repository star7th/showdoc prior to 2.10.4. (2022-03-15, CVE-2022-0967)

Stored XSS viva .ofd file upload in GitHub repository star7th/showdoc prior to 2.10.4. (2022-03-15, CVE-2022-0965)

Stored XSS viva .webmv file upload in GitHub repository star7th/showdoc prior to 2.10.4. (2022-03-15, CVE-2022-0964)

Stored XSS due to Unrestricted File Upload in GitHub repository star7th/showdoc prior to 2.10.4. (2022-03-15, CVE-2022-0942)

Stored XSS via File Upload in GitHub repository star7th/showdoc prior to 2.10.4. (2022-03-15, CVE-2022-0957)

Stored XSS via File Upload in GitHub repository star7th/showdoc prior to v.2.10.4. (2022-03-15, CVE-2022-0956)

File Upload Restriction Bypass leading to Stored XSS Vulnerability in GitHub repository star7th/showdoc prior to 2.10.4. (2022-03-15, CVE-2022-0951)

Unrestricted Upload of File with Dangerous Type in GitHub repository star7th/showdoc prior to 2.10.4. (2022-03-15, CVE-2022-0950)

Stored XSS viva axd and cshtml file upload in star7th/showdoc in GitHub repository star7th/showdoc prior to v2.10.4. (2022-03-15, CVE-2022-0945)

Stored XSS viva .webma file upload in GitHub repository star7th/showdoc prior to 2.10.4. (2022-03-14, CVE-2022-0962)

Stored XSS viva .properties file upload in GitHub repository star7th/showdoc prior to 2.10.4. (2022-03-14, CVE-2022-0960)

Stored XSS viva cshtm file upload in GitHub repository star7th/showdoc prior to v2.10.4. (2022-03-14, CVE-2022-0946)

Stored XSS due to Unrestricted File Upload in GitHub repository star7th/showdoc prior to v2.10.4. (2022-03-14, CVE-2022-0941)

Stored XSS due to Unrestricted File Upload in GitHub repository star7th/showdoc prior to v2.10.4. (2022-03-14, CVE-2022-0940)

Stored XSS via file upload in GitHub repository star7th/showdoc prior to v2.10.4. (2022-03-14, CVE-2022-0938)

Stored xss in showdoc through file upload in GitHub repository star7th/showdoc prior to 2.10.4. (2022-03-14, CVE-2022-0937)

Cross-site Scripting (XSS) - Stored in GitHub repository star7th/showdoc prior to 2.10.2. (2022-03-12, CVE-2022-0880)

Cross-site Scripting (XSS) - Stored in GitHub repository star7th/showdoc prior to 2.10.2. (2022-01-22, CVE-2021-4172)

ShowDoc 2.4.1 has XSS via the lang parameter because install/database.php mishandles the $cur_lang value. (2018-11-22, CVE-2018-19433)

ShowDoc v1.8.0 has XSS via a new page. (2018-09-02, CVE-2018-16342)

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>