# CVE-2026-45146: Chamilo LMS: Blind SQL Injection in model.ajax.php via filters[groupOp] authentificated

Status: published. Published: 2026-11-03. Updated: 2026-11-03.

Chamilo LMS is an open-source learning management system. Prior to 1.11.40 and 2.0.1, an authenticated administrator can call the get_sessions action in /main/inc/ajax/model.ajax.php with _search=true and a crafted JSON filters parameter whose groupOp field contains SQL syntax. Because groupOp is not restricted to the expected AND or OR operators before it is incorporated into query logic, attacker-controlled input is interpreted by the database and enables blind or time-based SQL injection. Successful exploitation can disclose sensitive user, course, session, configuration, password-reset, and administrative data, modify or delete records subject to database privileges, and cause denial of service through expensive delayed queries. This issue is fixed in versions 1.11.40 and 2.0.1.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- chamilo / chamilo-lms: < 1.11.40 (affected); >= 2.0.0, < 2.0.1 (affected). Source: CNA: GitHub_M

## Severity and prioritization

- CVSS 3.1: 7.2 (high); CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H; source: CNA: GitHub_M

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-89

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/chamilo/chamilo-lms/security/advisories/GHSA-prqp-8x29-cr88 (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/chamilo/chamilo-lms/commit/4472f3089bbbca1b4713bfd7059907676b80d07f (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/chamilo/chamilo-lms/commit/7cc961d60ac27eaccd6bcc8db201de2c65adfdf3 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/chamilo/chamilo-lms/releases/tag/v1.11.40 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/chamilo/chamilo-lms/releases/tag/v2.0.1 (CNA: GitHub_M; x_refsource_MISC)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-45146; retrieved 2026-11-03; source updated 2026-11-03

Revision: 059e54a893b75ae1232c9b706ba06e056fac82636f55c98cb133c7b4f51d8ffd

Canonical: https://y2.dev/cve/CVE-2026-45146

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