CVE-2026-23697
Vtiger CRM < 8.4.0 Authenticated File Upload RCE via Documents Module
- State
- Published
- Severity
- 8.7 High
- Published
- Jul 7, 2026
- Updated
- Jul 14, 2026
- Reserved
- Jan 14, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | 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 | VulnCheck |
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-434 Unrestricted Upload of File with Dangerous Type
Affected Products
| Product | Versions |
|---|---|
Vtiger CRMVtiger |
|
References
- Researcher Disclosuretechnical-descriptionexploit
- Project Homepageproduct
- https://www.vulncheck.com/advisories/vtiger-crm-authenticated-file-upload-rce-via-documents-modulethird-party-advisory
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