Is this vulnerability remotely exploitable?

Yes. In typical deployments, any user who can reach the Chamilo `/index.php` endpoint and provide an `openid_url` value may be able to trigger SSRF, subject to authentication and feature exposure.

What level of access does an attacker need?

The attacker must be able to send HTTP POST requests to the affected endpoint with control over the `openid_url` parameter. Whether they must be authenticated depends on how the OpenID feature is configured, but the vulnerability does not inherently require elevated privileges.

What is the safest general fix pattern?

The most robust pattern is to avoid using arbitrary user-supplied URLs as outbound request targets. Instead, maintain a fixed set of trusted OpenID provider endpoints, validate inputs against this allow-list, and block requests to private or internal address spaces at both application and network layers.

Severity:

CRITICAL RISK

(9.1)

Blind Server-Side Request Forgery (CWE-918) in Chamilo LMS OpenID Endpoint

CVE-2025-50199

Published:

Mar 2, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

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Remote Code Execution via SQL Injection on the Database Server

March 7, 2026

Vulnerability Type

Category:

Server-Side Request Forgery (SSRF)

CWE:

CWE-918

Impact:

Internal Network Access and Potential Data Exfiltration via SSRF

Severity:

CRITICAL RISK

(9.1)

CVSS Version:

3.1

Vulnerability Type

Category:

Server-Side Request Forgery (SSRF)

CWE:

CWE-918

Impact:

Internal Network Access and Potential Data Exfiltration via SSRF

Severity:

CRITICAL RISK

(9.1)

CVSS Version:

3.1

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355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Blind Server-Side Request Forgery (CWE-918) in Chamilo LMS OpenID Endpoint

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

CRITICAL RISK

CRITICAL

(9.9)

Command Injection in MCP Stdio Configuration Validation (CWE-78) in WeKnora

CRITICAL RISK

CRITICAL

(9.9)

SQL Injection via PostgreSQL Array/Row Expressions (CWE-89) in WeKnora Query Engine

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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