Open Redirection Vulnerability in GetSimpleCMS 3.3.13 Information -------------------- Advisory by Netsparker Name: Open Redirection Vulnerability in GetSimpleCMS Affected Software: GetSimpleCMS Affected Versions: 3.3.13 Homepage: http://get-simple.info/ Vulnerability: Open Redirection Severity: Medium Status: Not Fixed CVSS Score (3.0): AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N Netsparker Advisory Reference: NS-18-056 Technical Details -------------------- URL : http://GetSimpleCMS-3.3.13/admin/index.php?redirect=http://r87.com/?localhost/ Parameter Name : redirect Parameter Type : GET Attack Pattern : http://r87.com/?localhost/ Github: https://github.com/GetSimpleCMS/GetSimpleCMS/issues/1300 For more information on Open Redirection vulnerabilities read the article Open Redirection. Advisory Timeline -------------------- 12th November 2018 - First Contact 12th November 2018 - Disclosed Publicly at Request 14th Febuary 2019 - Advisory Released Credits & Authors -------------------- These issues have been discovered by Mithat GAPgebakan while testing Netsparker Web Application Security Scanner. About Netsparker -------------------- 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.