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Server-Side Request Forgery (SSRF)


Severity High
Score 7.5/10


Concrete CMS (formerly concrete5) versions before 8.5.7 and 9.0.0 allow local IP importing causing the system to be vulnerable to a. SSRF attacks on the private LAN servers by reading files from the local LAN. An attacker can pivot in the private LAN and exploit local network apps and b. SSRF Mitigation Bypass through DNS Rebinding. Concrete CMS security team gave this a CVSS score of 3.5 AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N Concrete CMS is maintaining Concrete version 8.5.x until 1 May 2022 for security fixes.This CVE is shared with HackerOne Reports and Adrian Tiron from FORTBRIDGE ( ) and Bipul Jaiswal

  • LOW
  • NONE
  • NONE
  • NONE
  • HIGH
  • NONE

CWE-918 - Server-Side Request Forgery (SSRF)

Server-side request forgery (SSRF) is a weakness that allows an attacker to send an arbitrary request, making it appear that the request was sent by the server. This request may bypass a firewall that would normally prevent direct access to the URL. The impact of this vulnerability can vary from unauthorized access to files and sensitive information to remote code execution.

Advisory Timeline

  • Published