Adobe ColdFusion Path Traversal Remote Code Execution Vulnerability Urgent Advisory (CVE-2026-48282)

1. Apply Official Security Patches

Immediately update your ColdFusion installations to the patched versions recommended in Adobe Security Bulletin APSB26-68.

• Navigate to ColdFusion Administrator -> 'Updates' -> 'Server Update' to apply the latest hotfix.

2. Temporary Mitigations

If immediate patching is not feasible, implement the following defensive measures:

• WAF (Web Application Firewall) Rules:

Deploy rules to detect and block directory traversal sequences in HTTP requests.

  # Example Nginx configuration to block traversal attempts
  if ($request_uri ~* "(\.\./|\.\.\\)") {
      return 403;
  }

• Restrict Administrator Access:

Block external access to the /CFIDE/administrator and internal API endpoints, restricting access only to trusted internal IP ranges or VPNs.

Vulnerability Overview

CVE-2026-48282 is a critical Path Traversal vulnerability (CWE-22) in Adobe ColdFusion with a CVSS score of 10.0. It allows unauthenticated remote attackers to bypass directory restrictions and execute arbitrary code within the context of the ColdFusion service.

Exploit Mechanics & Impact

• Improper Path Sanitization: The vulnerability stems from inadequate validation of user-supplied input in file path parameters, failing to properly restrict directory traversal sequences (e.g., ../ or ..\).
• Arbitrary Code Execution: Attackers leverage this traversal flaw to access restricted directories, upload malicious scripts (webshells), or execute arbitrary system commands without requiring any user interaction.
• Active Exploitation (CISA KEV): With an EPSS score of 0.94, this vulnerability is listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, indicating active exploitation by threat actors.