CVE-2026-35196

HIGH EPSS 75.2%
Published Apr 14, 20262mo ago · Modified Jun 17, 20262w ago
8.8 CVSS 3.1
High
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Published Apr 14, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
8.8
Exploitability
2.8
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
75.2% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-78 OS Command Injection Injection

Affected Products 11

VendorProductVersionRange
chamilochamilo_lms* ≤1.11.38
chamilochamilo_lms2.0.0any
chamilochamilo_lms2.0.0any
chamilochamilo_lms2.0.0any
chamilochamilo_lms2.0.0any
chamilochamilo_lms2.0.0any
chamilochamilo_lms2.0.0any
chamilochamilo_lms2.0.0any
chamilochamilo_lms2.0.0any
chamilochamilo_lms2.0.0any
chamilochamilo_lms2.0.0any

References 3

  • github.com https://github.com/chamilo/chamilo-lms/commit/62671e5e268f235cddfba704edee90f35c234df1
    Patch
  • github.com https://github.com/chamilo/chamilo-lms/releases/tag/v2.0.0-RC.3
    ProductRelease Notes
  • github.com https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-crc6-r6c7-44q3
    ExploitVendor Advisory

Remediation

  • github.com https://github.com/chamilo/chamilo-lms/commit/62671e5e268f235cddfba704edee90f35c234df1
    Patch