CVE-2026-34239 HIGH

CVE-2026-34239: Chamilo Authenticated Remote Code Execution

Vendor Chamilo

Product chamilo-lms

Weakness CWE-285

Published July 20, 2026

Last update July 20, 2026

View on NVD All CVEs

CVSS base score

7.5/10

Attack vector Network

Attack complexity High

Privileges required High

User interaction None

Confidentiality —

Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

What the vulnerability does

01Description

Chamilo version 1.11.40 and earlier are vulnerable to authenticated remote code execution in the main/inc/ajax/lang.ajax.php path. This endpoint is protected only by `api_protect_course_script(true)`, which means any authenticated user enrolled in a course (student, teacher, DRH) can reach it.

Key dates

02Disclosure timeline

July 20, 2026 CVE published

External resources

03References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-34239 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/285.html AskarLabs — CWE-285 write-up Improper Authorization

Related vulnerabilities

04Related CVE

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