CVE-2026-28430
Received Received - Intake
Unauthenticated SQL Injection in Chamilo LMS Enables Admin Takeover

Publication date: 2026-03-16

Last updated on: 2026-03-17

Assigner: GitHub, Inc.

Description
Chamilo LMS is a learning management system. Prior to version 1.11.34, there is an unauthenticated SQL injection vulnerability which allows remote attackers to execute arbitrary SQL commands via the custom_dates parameter. By chaining this with a predictable legacy password reset mechanism, an attacker can achieve full administrative account takeover without any prior credentials. The vulnerability also exposes the entire database, including PII and system configurations. This issue has been patched in version 1.11.34.
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Meta Information
Published
2026-03-16
Last Modified
2026-03-17
Generated
2026-06-16
AI Q&A
2026-03-16
EPSS Evaluated
2026-06-15
NVD
CVE-2026-28430
EUVD
EUVD-2026-12492
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
chamilo chamilo_lms to 1.11.34 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-89 The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.
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Mitigation Strategies

The immediate step to mitigate this vulnerability is to upgrade Chamilo LMS to version 1.11.34 or later, where the issue has been patched.

Since the vulnerability allows unauthenticated SQL injection via the custom_dates parameter, applying the patch or upgrading will neutralize the improper input handling and prevent exploitation.

Executive Summary

CVE-2026-28430 is a critical unauthenticated SQL injection vulnerability in Chamilo LMS versions up to 1.11.32. It occurs due to improper neutralization of special elements in the custom_dates parameter, allowing remote attackers to inject arbitrary SQL commands without needing to authenticate.

Attackers can exploit this flaw by chaining it with a predictable legacy password reset mechanism to gain full administrative account takeover without any prior credentials.

Impact Analysis

This vulnerability can have severe impacts including unauthorized access to the entire Chamilo LMS database.

  • Full administrative account takeover without prior credentials.
  • Exposure of sensitive information such as personally identifiable information (PII) of students.
  • Exposure of teacher credentials, financial data, and course information.
Compliance Impact

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Detection Guidance

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