Showdoc 2.10.3 Stored Cross-Site Scripting (XSS)

2022.05.17
Credit: Akshay Ravi
Risk: Low
Local: No
Remote: Yes
CWE: CWE-79


CVSS Base Score: 3.5/10
Impact Subscore: 2.9/10
Exploitability Subscore: 6.8/10
Exploit range: Remote
Attack complexity: Medium
Authentication: Single time
Confidentiality impact: None
Integrity impact: Partial
Availability impact: None

# Exploit Title: Showdoc 2.10.3 - Stored Cross-Site Scripting (XSS) # Exploit Author: Akshay Ravi # Vendor Homepage: https://github.com/star7th/showdoc # Software Link: https://github.com/star7th/showdoc/releases/tag/v2.10.3 # Version: <= 2.10.3 # Tested on: macOS Monterey # CVE : CVE-2022-0967 Description: Stored XSS via uploading file in .ofd format 1. Create a file with .ofd extension and add XSS Payload inside the file filename = "payload.ofd" payload = "<script>alert(1)</script>" 2. Login to showdoc v2.10.2 and go to file library Endpoint = "https://www.site.com/attachment/index" 3. Upload the payload on file library and click on the check button 4. The XSS payload will executed once we visited the URL


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