Is CVE-2026-33715 actively exploited?

No active exploitation of CVE-2026-33715 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-33715 be exploited remotely?

Yes. CVE-2026-33715 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-33715?

CVE-2026-33715 has a CVSS score of 7.2 (HIGH).

HOME VULNERABILITIESCVE-2026-33715

HIGH

CVE-2026-33715

CWE-306Published: April 14, 2026· Updated: Apr 17, 2026

7.2

CVSS v3.1

EPSS:0.06%probability of exploitation in 30 daysPercentile:17.7th

Official Description

Chamilo LMS is an open-source learning management system. In version 2.0-RC.2, the file public/main/inc/ajax/install.ajax.php is accessible without authentication on fully installed instances because, unlike other AJAX endpoints, it does not include the global.inc.php file that performs authentication and installation-completed checks. Its test_mailer action accepts an arbitrary Symfony Mailer DSN string from POST data and uses it to connect to an attacker-specified SMTP server, enabling Server-Side Request Forgery (SSRF) into internal networks via the SMTP protocol. An unauthenticated attacker can also abuse this to weaponize the Chamilo server as an open email relay for phishing and spam campaigns, with emails appearing to originate from the server's IP address. Additionally, error responses from failed SMTP connections may disclose information about internal network topology and running services. This issue has been fixed in version 2.0.0-RC.3.

NVD Source

Technical Analysis

CVE-2026-33715 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.