Vulnerability · Published Mar 16, 2026 · Assigned by GitHub_M

CVE-2026-28430Chamilo LMS Vulnerable to Unauthenticated SQL Injection in chamiko-lms model.ajax.php

Critical 9.3

In plain English

A critical-severity SQL injection in chamilo-lms from chamilo. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 29% of all known vulnerabilities).

Severity (CVSS 4.0)9.3Critical

Exploit odds (30 days)0.3%top 71.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
chamilo	chamilo-lms	< 1.11.34

Weakness: CWE-89 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

References

https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-84gw-qjw9-v8jv x_refsource_CONFIRM
https://github.com/chamilo/chamilo-lms/releases/tag/v1.11.34 x_refsource_MISC