CVE-2026-33698— Chamilo LMS affected by unauthenticated RCE in main/install folder
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I. Basic Information for CVE-2026-33698
Vulnerability Information
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Vulnerability Title
Chamilo LMS affected by unauthenticated RCE in main/install folder
Source: NVD (National Vulnerability Database)
Vulnerability Description
Chamilo LMS is a learning management system. Prior to 1.11.38, a chained attack can enable otherwise-blocked PHP code from the main/install/ directory and allow an unauthenticated attacker to modify existing files or create new files where allowed by system permissions. This only affects portals with the main/install/ directory still present and read-accessible. This vulnerability is fixed in 1.11.38.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
对外部实体的文件或目录可访问
Source: NVD (National Vulnerability Database)
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 1.11.38之前版本存在安全漏洞，该漏洞源于链式攻击可能启用main/install/目录中被阻止的PHP代码，可能导致未经身份验证的攻击者修改现有文件或创建新文件。
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 | < 1.11.38 | - |
II. Public POCs for CVE-2026-33698
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · chamilo · 2026-04-10 · 23 CVEs total
| CVE-2026-33707 | 9.4 CRITICAL | Weak Password Recovery Mechanism for Forgotten Password in chamilo/chamilo-lms |
| CVE-2026-32892 | 9.1 CRITICAL | OS Command Injection in Chamilo LMS 1.11.36 |
| CVE-2026-33618 | 8.8 HIGH | Chamilo LMS Affected by Remote Code Execution via eval() in Platform Settings |
| CVE-2026-31939 | 8.3 HIGH | Path Traversal (Arbitrary File Delete) in Chamilo LMS |
| CVE-2026-31941 | 7.7 HIGH | Server-Side Request Forgery (SSRF) in Chamilo LMS |
| CVE-2026-33710 | 7.5 HIGH | Chamilo LMS has Weak REST API Key Generation (Predictable) |
| CVE-2026-31940 | 7.5 HIGH | Session Fixation in Chamilo LMS |
| CVE-2026-32931 | 7.5 HIGH | Chamilo LMS has Arbitrary File Upload via MIME-Only Validation in Exercise Sound Upload Le |
| CVE-2026-32894 | 7.1 HIGH | Chamilo LMS has an IDOR in Gradebook Allows Cross-Course Deletion of Any Student's Grade R |
| CVE-2026-33706 | 7.1 HIGH | Chamilo LMS has a REST API Self-Privilege Escalation (Student → Teacher) |
| CVE-2026-33702 | 7.1 HIGH | Chamilo LMS has an Insecure Direct Object Reference (IDOR) |
| CVE-2026-33704 | 7.1 HIGH | Chamilo LMS Affected by Authenticated Arbitrary File Write via BigUpload endpoint |
| CVE-2026-32930 | 7.1 HIGH | Chamilo LMS has an IDOR in Gradebook Allows Cross-Course Evaluation Edit Without Ownership |
| CVE-2026-33708 | 6.5 MEDIUM | Chamilo LMS has REST API PII Exposure via get_user_info_from_username |
| CVE-2026-33736 | 6.5 MEDIUM | Chamilo LMS has an Insecure Direct Object Reference (IDOR) - User Data Exposure |
| CVE-2026-33141 | 6.5 MEDIUM | Chamilo LMS has an IDOR in REST API Stats Endpoint Exposes Any User's Learning Data |
| CVE-2026-32893 | 5.4 MEDIUM | Chamilo LMS has Reflected XSS via Unsanitized http_build_query() in Exercise Question List |
| CVE-2026-33705 | 5.3 MEDIUM | Chamilo LMS has unauthenticated access to Twig template source files exposes application l |
| CVE-2026-33737 | 5.3 MEDIUM | Chamilo LMS has an XML External Entity (XXE) Injection |
| CVE-2026-32932 | 4.7 MEDIUM | Chamilo LMS has an Open Redirect via Unvalidated 'page' Parameter in Session Course Edit |
Showing top 20 of 23 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: chamilo-lms
- CVE-2026-40291
Chamilo LMS has Privilege Escalation via API User Role Modif - CVE-2026-35196
Chamilo LMS has OS Command Injection via export_all_certific - CVE-2026-34602
Chamilo LMS: IDOR in /api/course_rel_users Allows Unauthoriz - CVE-2026-34370
Chamilo LMS: IDOR in the Notebook Module allows an attacker - CVE-2026-34161
Chamilo LMS: Stored XSS via Malicious File Upload in Social
Same vendor: chamilo
- CVE-2026-40291
Chamilo LMS has Privilege Escalation via API User Role Modif - CVE-2026-35196
Chamilo LMS has OS Command Injection via export_all_certific - CVE-2026-34602
Chamilo LMS: IDOR in /api/course_rel_users Allows Unauthoriz - CVE-2026-34370
Chamilo LMS: IDOR in the Notebook Module allows an attacker - CVE-2026-34161
Chamilo LMS: Stored XSS via Malicious File Upload in Social
Same weakness: CWE-552
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Synology SSL VPN Client 安全漏洞 - CVE-2026-35446
LORIS has a path traversal in FilesDownloadHandler - CVE-2026-34392
LORIS has a path traversal in static router
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