CVE-2026-6257 (GCVE-0-2026-6257)

Vulnerability from cvelistv5 – Published: 2026-04-20 19:09 – Updated: 2026-10-29 21:16
VLAI
Title
Vvveb CMS < v1.0.8.2 Remote Code Execution via Media Management
Summary
Vvveb CMS before 1.0.8.2 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.
Severity
9.2 (Critical)
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:H/SA:N
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-04-21 18:05 UTC
CWE
  • CWE-434 - Unrestricted Upload of File with Dangerous Type
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 7427 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Vvveb Vvveb CMS Affected: 0 , < 1.0.8.2 (custom)
Unaffected: 1.0.8.2 (custom)
    cpe:2.3:a:vvveb:vvveb:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-04-20 00:00
Credits
Mohammed EL OUARDANI
Show details on NVD website
To clipboard 

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