Vulnerability · Published Jul 7, 2026 · Assigned by VulnCheck
CVE-2026-23697Vtiger CRM < 8.4.0 Authenticated File Upload RCE via Documents Module
High 8.8
In plain English
A high-severity unrestricted file upload in Vtiger CRM from Vtiger. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 63% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Vtiger | Vtiger CRM | 0 – through 8.3.0 |
Weakness: CWE-434 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
References
- Researcher Disclosure technical-description, exploit
- Project Homepage product
- https://www.vulncheck.com/advisories/vtiger-crm-authenticated-file-upload-rce-via-documents-module third-party-advisory