CVE-2026-23697
Vtiger CRM < 8.4.0 Authenticated File Upload RCE via Documents Module
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-434 |
| Vendor | vtiger |
| Product | vtiger crm |
| Published | Jul 7, 2026 |
| Last Updated | Jul 14, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Vtiger / Vtiger CRM
0 ≤ 8.3.0
References
Credits
Jiva (JivaSecurity)