High 8.8Published Apr 14, 2026

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

Updated under an hour ago (Oct 26, 2026, 10:40 AM ET)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for chamilo-lms

Exploited in the last 30 days

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: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-78
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Apr 15, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

chamilo chamilo-lms chamilo:lms (from the name)	before 2.0.0-RC.3	CNA record
chamilo chamilo_lms chamilo:chamilo_lms	through 1.11.38; 2.0.0; 2.0.0; 2.0.0; 2.0.0; 2.0.0; 2.0.0; 2.0.0; and 3 more ranges	NVD

References

https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-crc6-r6c7-44q3x-refsource-confirm, exploit, vendor-advisory
https://github.com/chamilo/chamilo-lms/commit/62671e5e268f235cddfba704edee90f35c234df1x-refsource-misc, patch
https://github.com/chamilo/chamilo-lms/releases/tag/v2.0.0-RC.3x-refsource-misc, product, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.