Vulnerability · Published May 14, 2026 · Assigned by VulnCheck

CVE-2026-41937Vvveb < 1.0.8.3 Unrestricted File Upload RCE via Plugin Upload

High 7.2

In plain English

A high-severity unrestricted file upload in Vvveb from givanz. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities).

Severity (CVSS 3.1)7.2High

Exploit odds (30 days)0.4%top 65.2% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Vvveb before 1.0.8.3 contains an unrestricted file upload vulnerability in the plugin upload endpoint that allows super_admin users to execute arbitrary PHP code by uploading a malicious plugin ZIP file. Attackers can craft a ZIP containing a plugin.php with a valid Slug header and a public/index.php file with arbitrary PHP code, which executes as the web server user once accessed via subsequent unauthenticated HTTP requests to the plugin's public path.

Affected products (as reported)

Vendor	Product	Versions
givanz	Vvveb	0 – before 1.0.8.3

Weakness: CWE-434, CWE-61 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/givanz/Vvveb/releases/tag/1.0.8.3 release-notes
https://github.com/givanz/Vvveb/commit/04f0294350ec429e307cd31c2e777a4797c868d6 patch
https://www.vulncheck.com/advisories/vvveb-unrestricted-file-upload-rce-via-plugin-upload third-party-advisory