thinQtankLABS

Root-Cause & Secure-Code Remediation: CVE-2026-48282

Fix CVE-2026-48282 at the source. Read the vulnerable Adobe ColdFusion template-include handler, see how the tpl value is concatenated into the include path (CWE-22) and executed, reject a dot-stripping attempt, deploy a validated handler (getFileFromPath + allowlist + getCanonicalPath), record the lockdown and upload deny-exec, and verify with audit and vulnscan.

Expert 20 guided steps 4 tasks About 80 minutes Runs in your browser

Skills you will practice

  • Secure software design
  • path-traversal defense; Traversal to RCE
  • root cause and remediation; Secure architecture and hardening

Certifications this lab maps to

This lab builds hands-on skills that appear on these certification exams. thinQtank Learning runs instructor-led training camps for each — click one to see upcoming classes.

ISC2 CSSLP CSSLP Secure software design, path-traversal defense Training at thinQtank Learning CompTIA PenTest+ PT0-003 Traversal to RCE, root cause and remediation Training at thinQtank Learning CompTIA SecurityX CAS-005 (CASP+) Secure architecture and hardening Training at thinQtank Learning
Part of these certification lab packages: PenTest+ PT0-003 SecurityX (CASP+) CAS-005 CSSLP

The scenario

Triage updated ColdFusion; IR handled the breach. You are the security engineer who has to fix the handler and record the lockdown. Start at the source.

What you will do

  1. Understand the root cause4 steps

    Open the source · Read the root-cause note · Read the vulnerable handler · What is the sink?

  2. Audit and reject the weak fix4 steps

    Audit the vulnerable file · Read the proposed fix · Audit the weak fix · Why is the blacklist insufficient?

  3. Apply the fix and record the lockdown8 steps

    Read the correct fix · Audit the correct fix · What makes it safe? · Deploy the fix · …

  4. Reason and document4 steps

    Verify the deployed handler · Two layers · Write the PR note · The principle

How this lab works

A real Linux-style console. Commands run against real files, so hashes, hex dumps and comparisons give real results.

A file browser where you can place evidence into the lab, either the file provided or one of your own.

Reset a single step, a whole task or the entire lab. The environment is rebuilt so you can try again cleanly.

Progress saves after every step. Close the tab and come back later; your files and answers are waiting.