CVE-2018-1999019

Name: CVE-2018-1999019
Creator: NVD / NIST
Published: 2018-07-23T15:29:00.707+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 3.41%

Last modified Jun 17, 2026

CVE-2018-1999019 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 3.41% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

3.41%

87.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-94

Affected Software

Vendor	Product	Versions
Chamilo	Chamilo Lms	1.11.0
Chamilo	Chamilo Lms	1.11.2
Chamilo	Chamilo Lms	1.11.4
Chamilo	Chamilo Lms	1.11.6
Chamilo	Chamilo Lms	1.11.8

References

https://github.com/chamilo/chamilo-lms/commit/0de84700648f098c1fbf6b807dee28ec640efe62Patch, Third Party Advisory
https://ibb.co/jBxe6yMailing List, Third Party Advisory
https://github.com/chamilo/chamilo-lms/commit/0de84700648f098c1fbf6b807dee28ec640efe62Patch, Third Party Advisory
https://ibb.co/jBxe6yMailing List, Third Party Advisory

Timeline

Published: Jul 23, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-1999019?

How severe is CVE-2018-1999019?

CVE-2018-1999019 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 3.41% probability of exploitation in the next 30 days.

How do I fix CVE-2018-1999019?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-1999019?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST