Improper Authorization Vulnerability in Chamilo LMS by Chamilo Foundation
CVE-2026-1106

5.3MEDIUM

Key Information:

Vendor

Chamilo

Status
Lms
Vendor
CVE Published:
18 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-1106?

A security flaw exists in Chamilo LMS affecting versions up to 2.0.0 Beta 1, specifically in the function deleteLegal housed in src/CoreBundle/Controller/SocialController.php within the Legal Consent Handler component. This vulnerability permits remote attackers to manipulate the userId argument, leading to unauthorized actions. The exploit is publicly available, underscoring the urgent need for users to apply necessary security measures. Notably, the vendor was alerted regarding this issue but did not respond to the disclosure.

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Affected Version(s)

LMS 2.0.0 Beta 1

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-1106 - Proof of Concept

References

https://vuldb.com/?id.341698
vdb-entrytechnical-description
https://vuldb.com/?ctiid.341698
signaturepermissions-required
https://vuldb.com/?submit.731510
third-party-advisory

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

angelkate (VulDB User)
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