givanz Vvveb up to 1.0.8.1 incomplete blacklist

Summaryinfo

A vulnerability, which was classified as critical, has been found in givanz Vvveb. This vulnerability affects unknown code. This manipulation causes incomplete blacklist. This vulnerability is registered as CVE-2026-41934. Remote exploitation of the attack is possible. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability has been found in givanz Vvveb and classified as critical. Affected by this vulnerability is an unknown functionality. The manipulation with an unknown input leads to a incomplete blacklist vulnerability. The CWE definition for the vulnerability is CWE-184. The product implements a protection mechanism that relies on a list of inputs (or properties of inputs) that are not allowed by policy or otherwise require other action to neutralize before additional processing takes place, but the list is incomplete, leading to resultant weaknesses. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Vvveb before version 1.0.8.2 contains an authenticated remote code execution vulnerability in the admin code editor that allows low-privilege authenticated users to execute arbitrary code through insufficient file extension restrictions, with the uploaded payload then executable via subsequent unauthenticated HTTP requests. Attackers with editor, author, contributor, or site_admin roles can write a malicious .htaccess file to map arbitrary extensions to the PHP handler, then upload PHP code with that extension to achieve unauthenticated remote code execution when the file is accessed via HTTP.

The weakness was published by Basant Kumar as GHSA-vfjj-gcvv-w248. The advisory is shared at github.com. This vulnerability is known as CVE-2026-41934 since 04/22/2026. The exploitation appears to be easy. The attack can be launched remotely. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1562.006 for this issue.

Upgrading to version 1.0.8.2 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 1196561276a3f49da5a714fef89ac9a6c6f9e33b is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-27889). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• givanz

Name

• Vvveb

Version

• 1.0.5
• 1.0.6
• 1.0.6.1
• 1.0.7
• 1.0.7.2
• 1.0.8
• 1.0.8.1

License

• open-source

Website

• Product: https://github.com/givanz/Vvveb/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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