Information
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Advisory by Netsparker
Name: Stored XSS vulnerability in Omeka 2.6
Affected Software: Omeka
Affected Versions: 2.6
Homepage: http://omeka.org
Vulnerability: Stored XSS
Severity: Medium
Status: Fixed
CVE-ID: CVE-2018-13423
CVSS Score (3.0) : CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N
Netsparker Advisory Reference: NS-18-004

Technical Details
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Injection Request
URL:/admin/items/edit/{id}
Parameter Name : add-to-tag
Parameter Type : POST
Attack Pattern : "><img src=z onmouseover=alert(1)>

Identification Request
URL:/admin/items/edit/{id}
Parameter Type: GET

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

Advisory Timeline
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23th April 2018 - First Contact
1st May 2018 - Vendor Fixed
9th July 2018 - Advisory Released

Credits & Authors
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These issues have been discovered by Zekvan Arslan 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 engine’s 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.