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CVE-2026-35196— Chamilo LMS has OS Command Injection via export_all_certificates action

CVSS 8.8 · High EPSS 0.21% · P43
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I. Basic Information for CVE-2026-35196

Vulnerability Information
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Vulnerability Title
Chamilo LMS has OS Command Injection via export_all_certificates action
Source: NVD (National Vulnerability Database)
Vulnerability Description
Chamilo LMS is an open-source learning management system. In versions prior to 2.0.0-RC.3, an OS Command Injection vulnerability exists in the main/inc/ajax/gradebook.ajax.php endpoint within the export_all_certificates action, where the course code retrieved from the session variable $_SESSION['_cid'] via api_get_course_id() is concatenated directly into a shell_exec() command string without sanitization or escaping using escapeshellarg(). If an attacker can manipulate or poison their session data to inject shell metacharacters into the _cid variable, they can achieve arbitrary command execution on the underlying server. Successful exploitation grants full access to read system files and credentials, alters the application and database, or disrupts server availability. This issue has been fixed in version 2.0.0-RC.3.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Chamilo LMS 操作系统命令注入漏洞
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 2.0.0-RC.3之前版本存在操作系统命令注入漏洞，该漏洞源于gradebook.ajax.php端点存在OS命令注入，可能导致任意命令执行。
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

VendorProductAffected VersionsCPESubscribe
chamilochamilo-lms < 2.0.0-RC.3 -

II. Public POCs for CVE-2026-35196

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III. Intelligence Information for CVE-2026-35196

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Same Patch Batch · chamilo · 2026-04-14 · 8 CVEs total

CVE-2026-402918.8 HIGHChamilo LMS has Privilege Escalation via API User Role Modification
CVE-2026-341608.6 HIGHChamilo LMS: Unauthenticated SSRF via PENS Plugin allows attacker to probe internal networ
CVE-2026-337157.2 HIGHChamilo LMS has Unauthenticated SSRF and Open Email Relay via install.ajax.php test_mailer
CVE-2026-346027.1 HIGHChamilo LMS: IDOR in /api/course_rel_users Allows Unauthorized Enrollment of Arbitrary Use
CVE-2026-343706.5 MEDIUMChamilo LMS: IDOR in the Notebook Module allows an attacker to view other users' private n
CVE-2026-34161Chamilo LMS: Stored XSS via Malicious File Upload in Social Post Attachments Leads to Arbi
CVE-2026-33714Chamilo LMS has Authenticated SQL Injection in statistics.ajax.php users_active action (2.

IV. Related Vulnerabilities

Same product: chamilo-lms
Same vendor: chamilo
Same weakness: CWE-78

V. Comments for CVE-2026-35196

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