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TI-2026-26085 Aliases CVE-2026-33706

Chamilo LMS has a REST API Self-Privilege Escalation (Student → Teacher)

Priority LOW 30CWE-269Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Privilege escalation
Confidentiality · integrity · availability
Low · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-269.

Summary

Chamilo LMS is a learning management system. Prior to 1.11.38, any authenticated user with a REST API key can modify their own status field via the update_user_from_username endpoint. A student (status=5) can change their status to Teacher/CourseManager (status=1), gaining course creation and management privileges. This vulnerability is fixed in 1.11.38.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00175 6th percentileScored 2026-11-07
Fix Fixed chamilo-lms (chamilo): 1.11.38

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
chamilochamilo-lmsbefore 1.11.381.11.38Patch availableCNA
  • chamilo-lms Vendorchamilo Affected before 1.11.38 Fixed in 1.11.38 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:chamilo:chamilo_lms:*:*:*:*:*:*:*:*before 1.11.38Vulnerablechamilo
  • cpe:2.3:a:chamilo:chamilo_lms:*:*:*:*:*:*:*:* Versions before 1.11.38 Vulnerable ·chamilo

Remediation

  • Fix · CNA chamilo-lms (chamilo) Fixed in 1.11.38

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-33706

References

Patch 1

Advisory 1

  • TI-2025-32070 Chamilo: Evaluation of untrusted user input leads to Remote Code Execution CVSS 3.1CRITICAL 9.8
  • TI-2025-32081 Deserialization of untrusted data in chamilo-lms CVSS 4.0HIGH 8.8
  • TI-2024-32140 Chamilo: Post-Auth Remote Code Execution CVSS 4.0HIGH 8.7
  • TI-2023-03907 Chamilo LMS Unauthenticated Big Upload File Remote Code Execution CVSS 3.1HIGH 8.1
  • TI-2025-32595 Chamilo: Stored XSS Vulnerability via CSV User Import CVSS 3.1HIGH 8.8
  • TI-2024-20321 Chamilo LMS 1.11.26 is vulnerable to Incorrect Access Control via main/auth/profile. CVSS 3.1HIGH 8.8
See all 121 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences