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CVE-2018-20328

19
FAUCET Score

CVE-2018-20328 describes a low-risk Cross-Site Scripting (XSS) vulnerability in Chamilo LMS version 1.11.8, specifically within the main/social/group_view.php component of the social groups tool. This flaw allows authenticated users to inject malicious scripts that could affect other users, provided administrators have granted specific permissions. The vulnerability has a CVSS score of 5.4 (Medium), indicating a low-complexity attack requiring user interaction, with potential for limited impact on confidentiality and integrity. The attack vector is network-based, and successful exploitation requires prior authentication. There is no evidence of active exploitation, nor is exploit code publicly available in Metasploit, Nuclei, or ExploitDB. Community discussion and media coverage for this CVE are minimal, aligning with the typical low attention given to the majority of reported vulnerabilities.

Impacted Technologies

VendorProductVersion(s)CPE
1.11.8CPE matchmatch criteria
cpe:2.3:a:chamilo:chamilo_lms:1.11.8:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.4MEDIUM

CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.66%
Probability of exploitation in next 30 days
EPSS Percentile
48.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0066 is in the 81st percentile among its peer group of 15,239 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / chamilo/chamilo-lms/commit/5e61c2b0fcc938ca687b8d4e593b1500aa52a034
PatchThird Party Advisory
support.chamilo.org / projects/1/wiki/Security_issues
PatchThird Party Advisory