EUVD-2026-23942
GHSA-c9rc-p9cp-2x7q
CVSS VectorNVD
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
2DescriptionNVD
Vvveb CMS v1.0.8 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.
AnalysisAI
Remote code execution in Vvveb CMS v1.0.8 allows authenticated administrators to execute arbitrary system commands as www-data via a two-stage file upload attack. Attackers exploit a logic flaw in the media management file rename handler that fails to block .php and .htaccess extensions, enabling MIME type manipulation followed by PHP code execution. …
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RemediationAI
Within 24 hours: Inventory all Vvveb CMS deployments and document current version numbers. Within 7 days: Restrict administrative access to CMS instances running v1.0.8 to trusted users only, and disable the media management file upload functionality if possible via configuration. …
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External POC / Exploit Code
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