CVE-2026-23697 Vtiger CRM < 8.4.0 Authenticated File Upload RCE via Documents Module
Authenticated users can achieve remote code execution by uploading malicious .phar files due to incomplete extension filtering and misconfigured Apache settings.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-23697?
CVE-2026-23697 is a high-severity vulnerability in Vtiger CRM, published on 7 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-434
Which versions are affected by CVE-2026-23697?
How do I fix CVE-2026-23697?
No fix has been published for CVE-2026-23697 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-23697 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-23697 exists.
Public exploit code: 1 proofs of concept on GitHub.
Sources
Also known as GHSA-3cpr-2h94-j6qj.