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How the CVE Works
CVE-2025-48828 exploits vBulletin’s template engine by abusing PHP conditionals in templates. Attackers craft malicious template code using alternative PHP syntax like "var_dump"("test"), bypassing security filters. This allows arbitrary PHP execution on the server. The vulnerability stems from insufficient input sanitization in template rendering, enabling attackers to inject and execute PHP code remotely. Exploits were observed in May 2025, leveraging this flaw for unauthenticated RCE.
DailyCVE Form
Platform: vBulletin
Version: 5.6.4 – 5.7.2
Vulnerability: RCE
Severity: Critical
Date: 06/25/2025
Prediction: Patch by 07/15/2025
What Undercode Say
grep -r "template_conditional" /vBulletin/path/
curl -X POST -d "template={malicious_php}" http://target/vb5/ajax/api
How Exploit
Craft malicious template with PHP syntax bypass. Inject via template editor or API.
Protection from this CVE
Update to patched version. Disable template edits.
Impact
Full server compromise. Data theft.
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
