CVE-2021-37391

Name: CVE-2021-37391
Creator: NVD / NIST
Published: 2021-08-10T20:15:08.683+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 2.14%

Last modified Jun 17, 2026

CVE-2021-37391 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. A user without privileges in Chamilo LMS 1.11.14 can send an invitation message to another user, e.g., the administrator, through main/social/search.php, main/inc/lib/social.lib.php and steal cookies or execute arbitrary code on the administration side via a stored XSS vulnerability via social network the send invitation feature.. EPSS estimates a 2.14% chance of exploitation in the next 30 days.

Description

A user without privileges in Chamilo LMS 1.11.14 can send an invitation message to another user, e.g., the administrator, through main/social/search.php, main/inc/lib/social.lib.php and steal cookies or execute arbitrary code on the administration side via a stored XSS vulnerability via social network the send invitation feature.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

2.14%

79.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Chamilo	Chamilo Lms	>= 1.11.0, < 1.11.14

References

https://gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chamilo-lms-1.11.14-xss-vulnerabilitiesExploit, Third Party Advisory
https://github.com/chamilo/chamilo-lms/commit/de43a77049771cce08ea7234c5c1510b5af65bc8Patch, Third Party Advisory
https://gitbook.seguranca-informatica.pt/cve-and-exploits/cves/chamilo-lms-1.11.14-xss-vulnerabilitiesExploit, Third Party Advisory
https://github.com/chamilo/chamilo-lms/commit/de43a77049771cce08ea7234c5c1510b5af65bc8Patch, Third Party Advisory

Timeline

Published: Aug 10, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-37391?

How severe is CVE-2021-37391?

CVE-2021-37391 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 2.14% probability of exploitation in the next 30 days.

How do I fix CVE-2021-37391?

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-2021-37391?

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

Scan your code now

Source: NVD / NIST