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

> Unauthenticated SQL injection in Chamilo LMS allows attackers to read the database and take over admin accounts via password reset chaining.

- **Severity:** Critical 9.3 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 16 Mar 2026
- **Updated:** 17 Mar 2026
- **Also known as:** GHSA-84gw-qjw9-v8jv

## What is CVE-2026-28430?

CVE-2026-28430 is a critical SQL injection vulnerability in Chamilo Chamilo Lms, published on 16 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### 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.

Weakness: CWE-89 (Improper Neutralization of Special Elements used in an SQL Command)

## Which versions are affected by CVE-2026-28430?

It affects 1 product.


Products: Chamilo Chamilo Lms.

## How do I fix CVE-2026-28430?

No fix has been published for CVE-2026-28430 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-28430 being exploited?

There is no known exploitation of CVE-2026-28430 in the wild and no public exploit code.

## Other vulnerabilities in Chamilo Chamilo Lms

- [CVE-2025-50187](https://insights.sbomify.com/CVE-2025-50187/): Chamilo: Evaluation of untrusted user input leads to Remote Code Execution (critical 9.8)
- [CVE-2023-34944](https://insights.sbomify.com/CVE-2023-34944/): File upload in n/a (critical 9.8)
- [CVE-2022-27423](https://insights.sbomify.com/CVE-2022-27423/): SQL injection in n/a (critical 9.8)
- [CVE-2021-35414](https://insights.sbomify.com/CVE-2021-35414/): SQL injection in n/a (critical 9.8)
- [CVE-2019-13082](https://insights.sbomify.com/CVE-2019-13082/): File upload in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-28430 and fix it if it is affected.

What it is: CVE-2026-28430 is a critical SQL injection vulnerability in Chamilo Chamilo Lms, published on 16 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-28430 in the wild and no public exploit code.

Affected product: Chamilo Chamilo Lms. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-28430/ (Markdown: https://insights.sbomify.com/CVE-2026-28430/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-28430
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-28430
- OSV: https://osv.dev/vulnerability/CVE-2026-28430

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-28430/
Summaries are generated and may contain mistakes; the official description above is the record.