TI-2023-17450 Aliases CVE-2023-34958 GHSA-m635-gpvm-5hcf

Incorrect access control in Chamilo 1.11.* up to 1.11.18 allows a student subscribed to a…

LOW 20CWE-863Published 2023-06-08 · Updated 2025-01-06

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: Low · None · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-863.

Summary

Incorrect access control in Chamilo 1.11.* up to 1.11.18 allows a student subscribed to a given course to download documents belonging to another student if they know the document's ID.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00411 35th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

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

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:chamilo:chamilo_lms::::::::	1.11.0 – 1.11.18	Vulnerable	chamilo

cpe:2.3:a:chamilo:chamilo_lms:*:*:*:*:*:*:*:* Versions 1.11.0 – 1.11.18 Vulnerable ·chamilo

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2023-34958
2026-10-03 Alias added: GHSA-m635-gpvm-5hcf

References

Patch 1

https://github.com/chamilo/chamilo-lms/commit/0c1c29db18856a6f25e21d0405dda2c20b35ff3a

Advisory 1

https://support.chamilo.org/projects/1/wiki/Security_issues#Issue-109-2023-04-15-Moderate-impact-Moderate-risk-IDOR-in-workstudent-publication

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