CVE-2026-6257
published 2026-04-20CVE-2026-6257: Vvveb CMS v1.0.8.2 contains a remote code execution vulnerability in its media management functionality where a missing return statement in the file rename…
PriorityP356critical9.1CVSS 3.1
AVNACLPRHUINSCCHIHAH
EPSS
0.63%
45.8th percentile
Vvveb CMS 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.
Affected
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| vvveb | vvveb_cms | — | — |
CVSS provenance
nvdv3.19.1CRITICALCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
nvdv4.09.2CRITICALCVSS: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
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VulDB
givanz Vvveb 1.0.8 unrestricted upload (EUVD-2026-23942)
vuldb·2026-04-20·CVSS 9.2
CVE-2026-6257 [CRITICAL] givanz Vvveb 1.0.8 unrestricted upload (EUVD-2026-23942)
A vulnerability was found in givanz Vvveb 1.0.8. It has been rated as critical. This issue affects some unknown processing. This manipulation causes unrestricted upload.
This vulnerability is handled as CVE-2026-6257. The attack can be initiated remotely. There is not any exploit available.
GHSA
GHSA-c9rc-p9cp-2x7q: Vvveb CMS v1
ghsa_unreviewed·2026-04-20
CVE-2026-6257 [CRITICAL] CWE-434 GHSA-c9rc-p9cp-2x7q: Vvveb CMS v1
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.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2026-04-20
Published