CVE-2026-35196Network attack vector

Authenticated command execution via unescaped course code

Published Apr 14, 2026 · Updated Apr 14, 2026

OS command injection in Chamilo LMS before 2.0.0-RC.3 allows remote authenticated users to execute commands through certificate export. The export_all_certificates action passes the session-derived course code to shell_exec without escapeshellarg, so shell metacharacters change the command. Exploitation requires an authenticated user to poison the _cid session value and grants the web-server process access to read files, alter data, or interrupt service.

CVSS severity8.8
High
EPSS probability1.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Chamilo LMS before 2.0.0-RC.3 allows remote authenticated users to execute commands through certificate export. The export_all_certificates action passes the session-derived course code to shell_exec without escapeshellarg, so shell metacharacters change the command. Exploitation requires an authenticated user to poison the _cid session value and grants the web-server process access to read files, alter data, or interrupt service.

The record

CVE
CVE-2026-35196
Published
Apr 14, 2026
Updated
Apr 14, 2026
Vendor
Chamilo
Product
Chamilo LMS
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 14, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 14, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.0.0-RC.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Chamilo · Chamilo LMSversion=< 2.0.0-RC.3

Published CVSS scores

8.8GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Unix Shell

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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