How exploitable is this vulnerability in practice?

Exploitability is significant when an attacker can learn or guess a username and narrow down the approximate time window in which an API key was created, making brute-force search over the reduced key space feasible.

Does an attacker need direct access to the Chamilo server to exploit this?

No direct server access is required. The attacker needs network access to the REST API and sufficient information about the target user and key creation time to generate and test candidate keys.

What is the safest general fix pattern for this issue?

The safest approach is to replace the custom key-generation algorithm with one that uses cryptographically secure random values of adequate length, independent of predictable inputs like timestamps or user IDs.

Severity:

HIGH RISK

(7.5)

Predictable REST API Key Generation (CWE-330) in Chamilo LMS

CVE-2026-33710

Published:

Apr 10, 2026

Status:

Received

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

CRITICAL RISK

CRITICAL

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI Handler setAccessDeviceCfg

Remote Code Execution on the Router

April 12, 2026

CWE-77;CWE-78

CRITICAL RISK

CRITICAL

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI setLedCfg Handler

Remote Code Execution on the Router

April 12, 2026

Vulnerability Type

Category:

Insufficient Randomness

CWE:

CWE-330

Impact:

Unauthorized REST API Access via Predictable API Keys

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

Vulnerability Type

Category:

Insufficient Randomness

CWE:

CWE-330

Impact:

Unauthorized REST API Access via Predictable API Keys

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

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355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Predictable REST API Key Generation (CWE-330) in Chamilo LMS

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

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI Handler setAccessDeviceCfg

CRITICAL RISK

CRITICAL

(9.8)

OS Command Injection (CWE-78) in Totolink A7100RU CGI setLedCfg Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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