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CVE-2026-23697: Unrestricted Upload of File with Dangerous Type in Vtiger Vtiger CRM

0
High
VulnerabilityCVE-2026-23697cvecve-2026-23697
Published: 07/07/2026 (07/07/2026, 16:17:02 UTC)
Source: CVE Database V5
Vendor/Project: Vtiger
Product: Vtiger CRM

Description

Vtiger CRM before 8.4.0 contains an authenticated file upload vulnerability that allows low-privileged users to achieve remote code execution by uploading a .phar file containing arbitrary PHP code through the Documents module, bypassing the extension denylist in config.inc.php which omits the .phar extension. The uploaded file is stored with its original .phar extension under the web-accessible storage directory, and a misconfigured .htaccess using Apache 2.2 syntax is silently ignored on Apache 2.4 deployments, allowing unauthenticated HTTP requests to directly execute the uploaded PHP payload.

CVSS v4.0

Score 8.7high

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Vuln. Confidentiality
High
Vuln. Integrity
High
Vuln. Availability
High
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Technical Details

Data Version
5.2
Assigner Short Name
VulnCheck
Date Reserved
2026-01-14T22:02:15.209Z
Cvss Version
4.0
State
PUBLISHED
Remediation Level
null

Threat ID: 6a4d2cd5c9d9e3dbe3825429

Added to database: 07/07/2026, 16:44:05 UTC

Last updated: 07/07/2026, 16:44:05 UTC

Views: 1

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