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CVE-2026-126378

9.1, critical

Givanz Vvveb Unrestricted Upload of File with Dangerous Type Vulnerability

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
9.1, critical critical CVSS v3.1
EPSS, next 30 days
0.8% higher than 57.7% of scored CVEs
Exploitation
No public evidence
Published
13 Nov 2026yesterday

Description

Vvveb through 1.0.8.6 contains a file upload vulnerability in the theme installer validFile() function that uses strpos() instead of strict path matching. Attackers with admin credentials can upload a ZIP containing a PHP file whose path includes /theme.php to achieve remote code execution on nginx deployments.

Details

Vendor
Givanz
Product
Vvveb
Weakness
CWE-434 (opens in a new tab)
Status
Deferred
Updated
13 Nov 2026
Assigner
disclosure@vulncheck.com

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

References 2

Advisories 1

Other references 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Givanz CVEs

Every Givanz CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-126370 Vvveb through 1.0.8.6 contains a remote code execution vulnerability allowing restricted site_admin roles to inject PHP by saving .sql… EPSS 0.8% 8.8, high
  • CVE-2026-126377 Givanz Vvveb Improper Authentication Vulnerability EPSS 0.6% 8.1, high

Beyond this page

Is CVE-2026-126378 in your network?

This page tells you how dangerous CVE-2026-126378 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 14 Nov 2026, not the live upstream state.