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CVE-2026-6257

CRITICAL · CVSS 9.1 EPSS 0.32% Public Exploit

Source: NVD + CISA KEV + EPSS · Published: 2026-04-20 · Last synced: 2026-05-18

CyberRota Analysis

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Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit remote code execution code execution
GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-6257
Severity
CRITICAL
CVSS
9.1
EPSS
0.32%
Apache

Original NVD Description

Vvveb CMS prior to v1.0.8.2 contains a remote code execution vulnerability in its media management functionality where a missing return statement in the file rename handler allows authenticated attackers to rename files to blocked extensions .php or .htaccess. Attackers can exploit this logic flaw by first uploading a text file and renaming it to .htaccess to inject Apache directives that register PHP-executable MIME types, then uploading another file and renaming it to .php to execute arbitrary operating system commands as the www-data user.