Vtiger CRM < 8.4.0 Authenticated File Upload RCE via Documents Module
Published Jul 7, 2026
8.7
HIGHCVSS 4.0
EPSS 1.00%
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
-
- Version 0StatusaffectedConstraints<=8.3.0
- Version 8.4.0StatusunaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Vtiger | Vtiger CRM | affected |
|
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (4)
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-42055 Advisory
- https://jivasecurity.com/writeups/vtiger-rce-phar-upload-cve-2026-23697 technical-descriptionexploit
- https://www.vtiger.com/ product
- https://www.vulncheck.com/advisories/vtiger-crm-authenticated-file-upload-rce-via-documents-module third-party-advisory
| Link | Providers | Tags |
|---|---|---|
| https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-42055 | Advisory | |
| https://jivasecurity.com/writeups/vtiger-rce-phar-upload-cve-2026-23697 | technical-descriptionexploit | |
| https://www.vtiger.com/ | product | |
| https://www.vulncheck.com/advisories/vtiger-crm-authenticated-file-upload-rce-via-documents-module | third-party-advisory |
Change history (0)
No recorded changes yet.