What is the CVSS score of CVE-2018-1999019?

CVE-2018-1999019 has a CVSS 3.1 base score of 9.8 (Critical). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H. EPSS exploitation probability: 3.4%.

Is there a patch available for CVE-2018-1999019?

Yes, a patch is available for CVE-2018-1999019. Update the affected software to the latest version immediately.

Chamilo Lms CVE-2018-1999019

CRITICAL

Code Injection (CWE-94)

2018-07-23 cve@mitre.org

PHP RCE Code Injection Chamilo Lms Chamilo

9.8

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-94 OWASP Top 10:2025 A05:2025 - Injection ASVS 5.0 V1 - Encoding and Sanitization Code injection prevention, sandbox exec MITRE ATT&CK 2 techniques across 2 tactics: Execution, Initial Access The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS score of 9.8 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required.
Exploit ScenarioDerived	A remote attacker could inject and execute arbitrary code within the application by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability.

Act Now Prioritize within 24-48h. Why: CRITICAL severity.

Patch available 3.4% exploitation probability (EPSS)

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AnalysisAI

Chamilo LMS version 11.x contains an Unserialization vulnerability in the "hash" GET parameter for the api endpoint located at /webservices/api/v2.php that can result in Unauthenticated remote code. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Code Injection vulnerability could allow attackers to inject and execute arbitrary code within the application.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Never evaluate user-controlled input as code. Use sandboxing, disable dangerous functions, apply strict input validation.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Code Injection (CWE-94), which allows attackers to inject and execute arbitrary code within the application. Chamilo LMS version 11.x contains an Unserialization vulnerability in the "hash" GET parameter for the api endpoint located at /webservices/api/v2.php that can result in Unauthenticated remote code execution. This attack appear to be exploitable via a simple GET request to the api endpoint. This vulnerability appears to have been fixed in After commit 0de84700648f098c1fbf6b807dee28ec640efe62. Affected products include: Chamilo Chamilo Lms. Version information: version 11..

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 9.8 CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

DescriptionNVD

Chamilo LMS version 11.x contains an Unserialization vulnerability in the "hash" GET parameter for the api endpoint located at /webservices/api/v2.php that can result in Unauthenticated remote code execution. This attack appear to be exploitable via a simple GET request to the api endpoint. This vulnerability appears to have been fixed in After commit 0de84700648f098c1fbf6b807dee28ec640efe62.

Threat Intelligence Overview

EPSS Score

3.4%

Top 13% exploitable

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity CRITICAL

CISA KEV No

Public POC No

EPSS 3.4%

Patch available Yes

Active threat No

Deciding rule

CRITICAL severity

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +3

CVSS: +49

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Code Injection CRITICAL

Code injection occurs when an application accepts user input and passes it directly into a language interpreter or evaluator without proper sanitization.

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)NVD

cpe:2.3:a:chamilo:chamilo_lms:1.11.0:-:*:*:*:*:*:*

cpe:2.3:a:chamilo:chamilo_lms:1.11.0:alpha2:*:*:*:*:*:*

cpe:2.3:a:chamilo:chamilo_lms:1.11.0:beta1:*:*:*:*:*:*

cpe:2.3:a:chamilo:chamilo_lms:1.11.0:beta2:*:*:*:*:*:*

cpe:2.3:a:chamilo:chamilo_lms:1.11.0:beta3:*:*:*:*:*:*

cpe:2.3:a:chamilo:chamilo_lms:1.11.0:beta4:*:*:*:*:*:*

cpe:2.3:a:chamilo:chamilo_lms:1.11.0:beta5:*:*:*:*:*:*

cpe:2.3:a:chamilo:chamilo_lms:1.11.0:beta6:*:*:*:*:*:*

cpe:2.3:a:chamilo:chamilo_lms:1.11.0:beta7:*:*:*:*:*:*

cpe:2.3:a:chamilo:chamilo_lms:1.11.0:rc1:*:*:*:*:*:*

cpe:2.3:a:chamilo:chamilo_lms:1.11.2:*:*:*:*:*:*:*

cpe:2.3:a:chamilo:chamilo_lms:1.11.4:-:*:*:*:*:*:*

cpe:2.3:a:chamilo:chamilo_lms:1.11.4:alpha1:*:*:*:*:*:*

cpe:2.3:a:chamilo:chamilo_lms:1.11.4:alpha2:*:*:*:*:*:*

cpe:2.3:a:chamilo:chamilo_lms:1.11.4:beta1:*:*:*:*:*:*

cpe:2.3:a:chamilo:chamilo_lms:1.11.4:rc1:*:*:*:*:*:*

cpe:2.3:a:chamilo:chamilo_lms:1.11.6:-:*:*:*:*:*:*

cpe:2.3:a:chamilo:chamilo_lms:1.11.6:alpha1:*:*:*:*:*:*

cpe:2.3:a:chamilo:chamilo_lms:1.11.8:-:*:*:*:*:*:*

cpe:2.3:a:chamilo:chamilo_lms:1.11.8:rc1:*:*:*:*:*:*

More in Chamilo Lms

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CVE-2025-50187 CRITICAL Act Now POC

9.8 Mar 02

Chamilo LMS prior to 1.11.28 has a code injection through SOAP request parameters enabling remote code execution.

CVE-2025-50192 CRITICAL Act Now POC

9.8 Mar 02

Chamilo LMS prior to 1.11.30 has a time-based SQL injection in a different endpoint, providing an additional database ex

CVE-2025-50190 CRITICAL Act Now POC

9.8 Mar 02

Chamilo LMS prior to 1.11.30 has an error-based SQL injection enabling database extraction.

CVE-2021-35414 CRITICAL Act Now POC

9.8 Dec 03

Chamilo LMS v1.11.x was discovered to contain a SQL injection via the doc parameter in main/plagiarism/compilatio/upload

CVE-2019-13082 CRITICAL Act Now POC

9.8 Jun 30

Chamilo LMS 1.11.8 and 2.x allows remote code execution through an lp_upload.php unauthenticated file upload feature. Ra

CVE-2025-50199 CRITICAL Act Now POC

9.1 Mar 02

Chamilo LMS prior to 1.11.30 has a blind SSRF vulnerability enabling internal network reconnaissance from the learning p

CVE-2023-4220 MEDIUM This Month POC

6.1 Nov 28

Unrestricted file upload in big file upload functionality in `/main/inc/lib/javascript/bigupload/inc/bigUpload.php` in C

CVE-2025-50189 HIGH This Week POC

8.8 Mar 02

Chamilo is a learning management system. [CVSS 8.8 HIGH]

CVE-2025-52468 HIGH This Week POC

8.8 Mar 02

Chamilo is a learning management system. Prior to version 1.11.30, an input validation vulnerability exists when importi

CVE-2024-30616 HIGH This Week POC

8.8 Nov 04

Chamilo LMS 1.11.26 is vulnerable to Incorrect Access Control via main/auth/profile. Rated high severity (CVSS 8.8), thi

CVE-2023-4226 HIGH This Week POC

8.8 Nov 28

Unrestricted file upload in `/main/inc/ajax/work.ajax.php` in Chamilo LMS <= v1.11.24 allows authenticated attackers wit

CVE-2023-4225 HIGH This Week POC

8.8 Nov 28

Unrestricted file upload in `/main/inc/ajax/exercise.ajax.php` in Chamilo LMS <= v1.11.24 allows authenticated attackers

Same weakness CWE-94 – Code Injection

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CVE-2021-22205 CRITICAL POC

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CVE-2021-44529 CRITICAL POC

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CVE-2014-6287 CRITICAL POC

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CVE-2017-7494 CRITICAL POC

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CVE-2013-3906 HIGH POC

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CVE-2017-9822 HIGH POC

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Same technique RCE

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CVE-2021-44228 CRITICAL POC

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CVE-2017-7269 CRITICAL POC

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CVE-2022-47966 CRITICAL POC

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CVE-2012-4681 CRITICAL POC

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CVE-2015-5119 CRITICAL POC

9.8

CVE-2016-4117 CRITICAL POC

9.8

CVE-2015-3113 CRITICAL POC

9.8

References

Advisories & patches

PATCH https://github.com/chamilo/chamilo-lms/commit/0de84700648f098c1fbf6b807dee28ec640efe62 REF https://ibb.co/jBxe6y

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