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CVE-2026-30876— Chamilo LMS: User enumeration vulnerability via response

Quick assessment

Affected
chamilo chamilo-lms
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Chamilo LMS是Chamilo开源的一套开源的在线学习和协作系统。该系统支持创建教学内容、远程培训和在线答题等。 Chamilo LMS 1.11.36之前版本存在安全漏洞，该漏洞源于存在用户枚举漏洞，可能导致攻击者区分有效和无效用户名。

AI Predicted 5.3 Difficulty: Trivial EPSS 0.36% · P28

Possible ATT&CK Techniques 1 AI

T1087 · Account Discovery
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I. Basic Information for CVE-2026-30876

Vulnerability Information
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Vulnerability Title
Chamilo LMS: User enumeration vulnerability via response
Source: CVE Program / CVE List V5
Vulnerability Description
Chamilo LMS is a learning management system. Prior to version 1.11.36, Chamilo is vulnerable to user enumeration with valid/invalid username. This issue has been patched in version 1.11.36.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
响应差异性信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
Chamilo LMS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Chamilo LMS是Chamilo开源的一套开源的在线学习和协作系统。该系统支持创建教学内容、远程培训和在线答题等。 Chamilo LMS 1.11.36之前版本存在安全漏洞，该漏洞源于存在用户枚举漏洞，可能导致攻击者区分有效和无效用户名。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
chamilo chamilo-lms < 1.11.36 -

II. Public POCs for CVE-2026-30876

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III. Intelligence Information for CVE-2026-30876

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Vendor Advisories for CVE-2026-30876 (1)

Vendor Pages for CVE-2026-30876 (1)

Same Patch Batch · chamilo · 2026-03-16 · 5 CVEs total

CVE-2026-30875 8.8 HIGH Chamilo LMS: Authenticated RCE via H5P Import
CVE-2026-30881 8.8 HIGH Chamilo LMS: SQL Injection in the statistics AJAX endpoint
CVE-2026-30882 6.1 MEDIUM Chamilo LMS: Reflected XSS in the session category listing page
CVE-2026-28430 Chamilo LMS Vulnerable to Unauthenticated SQL Injection in chamiko-lms model.ajax.php

IV. Related Vulnerabilities

Same product: chamilo-lms
Same vendor: chamilo
Same weakness: CWE-204

V. Comments for CVE-2026-30876

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