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CVE-2026-34160— Chamilo LMS: Unauthenticated SSRF via PENS Plugin allows attacker to probe internal network and reach cloud metadata services

CVSS 8.6 · High EPSS 0.08% · P24
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I. Basic Information for CVE-2026-34160

Vulnerability Information
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Vulnerability Title
Chamilo LMS: Unauthenticated SSRF via PENS Plugin allows attacker to probe internal network and reach cloud metadata services
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, the PENS (Package Exchange Notification Services) plugin endpoint at public/plugin/Pens/pens.php is accessible without authentication and accepts a user-controlled package-url parameter that the server fetches using curl without filtering private or internal IP addresses, enabling unauthenticated Server-Side Request Forgery (SSRF). An attacker can exploit this to probe internal network services, access cloud metadata endpoints (such as 169.254.169.254) to steal IAM credentials and sensitive instance metadata, or trigger state-changing operations on internal services via the receipt and alerts callback parameters. No authentication is required to exploit either SSRF vector, significantly increasing the attack surface. 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:N/UI:N/S:C/C:H/I:N/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
关键功能的认证机制缺失
Source: NVD (National Vulnerability Database)
Vulnerability Title
Chamilo LMS 代码问题漏洞
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之前版本存在代码问题漏洞，该漏洞源于未经验证的PENS插件端点接受用户控制的package-url参数且未过滤私有或内部IP地址，可能导致未经身份验证的服务端请求伪造攻击。
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-RC.3 -

II. Public POCs for CVE-2026-34160

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III. Intelligence Information for CVE-2026-34160

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

CVE-2026-351968.8 HIGHChamilo LMS has OS Command Injection via export_all_certificates action
CVE-2026-402918.8 HIGHChamilo LMS has Privilege Escalation via API User Role Modification
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-306

V. Comments for CVE-2026-34160

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