Chamilo LMS up to 2.0.0 career.lib.php unserialize extra_data deserialization

Summaryinfo

A vulnerability categorized as problematic has been discovered in Chamilo LMS up to 2.0.0. The impacted element is the function unserialize of the file public/main/inc/lib/career.lib.php. The manipulation of the argument extra_data results in deserialization. This vulnerability is known as CVE-2026-45145. It is possible to launch the attack remotely. No exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Chamilo LMS up to 2.0.0. Affected is the function unserialize of the file public/main/inc/lib/career.lib.php. The manipulation of the argument extra_data with an unknown input leads to a deserialization vulnerability. CWE is classifying the issue as CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Chamilo LMS is an open-source learning management system. Prior to 2.0.1, `public/main/inc/lib/career.lib.php` and `public/main/cron/import_csv.php` call PHP's native `unserialize()` on `user_career.extra_data` retrieved from the database without the `allowed_classes: false` safety option. An attacker able to write crafted serialized PHP objects to that column, for example through a separate SQL injection, a compromised admin CSV import, or a lower-privilege admin panel, can instantiate arbitrary PHP objects and trigger POP gadget chains in autoloaded `Symfony`, `Doctrine`, or `Monolog` components. This permits arbitrary OS commands as the web server user, compromising server confidentiality, integrity, and availability. This issue is fixed in version 2.0.1.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-45145 since 05/08/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation requires an enhanced level of successful authentication. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

By approaching the search of inurl:public/main/inc/lib/career.lib.php it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 2.0.1 eliminates this vulnerability.

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Productinfo

Type

• Content Management System

Vendor

• Chamilo

Name

• LMS

Version

• 2.0

License

• open-source

CPE 2.3info

• 🔒

CPE 2.2info

• 🔒

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