CVE-2026-126378Vvveb through 1.0.8.6 Webshell Upload via Theme Installer validFile() Bypass

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.

9.4 CRITICALNot in KEVNVD: Deferred

Last updated: 2026-11-13 10:17 UTC

OverviewCVSS details

9.4CRITICALCVSS 4.0

Score source: VulnCheck (CNA)
NVD status: Deferred
Published: Nov 13, 2026
Assigner: VulnCheck

Affected

Vvveb (givanz)

Versions: through 1.0.8.6

Exploitation

Public exploit: None listed
CISA KEV: Not listed
KEV due date: —

EPSS

No EPSS score yet.

CVSS 4.0 · VulnCheck (CNA)

9.4Critical

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Attack vector: Network
Attack complexity: Low
Attack requirements: None
Privileges required: High
User interaction: None
Confidentiality impact: High
Integrity impact: High
Availability impact: High
Confidentiality (other systems): High
Integrity (other systems): High
Availability (other systems): High

CVSS 3.1 · VulnCheck (CNA)

9.1Critical

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

Attack vector: Network
Attack complexity: Low
Privileges required: High
User interaction: None
Scope: Changed
Confidentiality impact: High
Integrity impact: High
Availability impact: High

NVD status: Deferred

Overview Affected Products References

Overview

Severity

Score	Severity	Version	Technologies Affected
9.4	CRITICAL	4.0VulnCheck (CNA)	Givanz Vvveb
9.1	CRITICAL	3.1VulnCheck (CNA)	Givanz Vvveb

Details

CVE ID: CVE-2026-126378
Status: Deferred
Assigner (CNA): VulnCheck
Published: Nov 13, 2026
Last modified: 2026-11-13 10:17 UTC
Weaknesses: CWE-434 · Unrestricted Upload of File with Dangerous Type

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-13 12:56 UTC.