CVE-2026-63239

Koollab LMS has a SQL injection and unsafe deserialization vulnerability in the manual mark assessment endpoint. An authenticated attacker can inject SQL, control data passed to unserialize(), write a webshell to a publicly accessible location, and execute arbitrary code on the server.

Koollab LMS has a SQL injection and unsafe deserialization vulnerability in the assessment overall answer endpoint. An authenticated attacker can inject SQL, control data passed to unserialize(), write a webshell to a publicly accessible location, and execute arbitrary code on the server.

Koollab LMS has a SQL injection and unsafe deserialization vulnerability in the assessment reinforcement endpoint. An authenticated attacker can inject SQL, control data passed to unserialize(), write a webshell to a publicly accessible location, and execute arbitrary code on the server.

Koollab LMS has a pre-authentication error-based SQL injection vulnerability in the SCORM report endpoint. An unauthenticated attacker can read sensitive database contents, including personally identifiable information, credentials, and valid JWT tokens, potentially enabling account takeover.

Koollab LMS has a pre-authentication blind SQL injection vulnerability in the SSO OAuth endpoint. An unauthenticated attacker can use a time-based SQL oracle to read sensitive database contents, including personally identifiable information, credentials, and valid JWT tokens, potentially enabling account takeover.

Koollab LMS has an unrestricted SCORM file upload vulnerability. An authenticated module designer can upload a SCORM package containing a PHP webshell to a publicly accessible directory and execute arbitrary code on the server.

Koollab LMS has a business logic vulnerability that allows an authenticated learner to set their lesson completion status to completed via the SCORM commit endpoint without viewing the lesson material, compromising training and completion records.

An insecure direct object reference vulnerability in Koollab LMS allowed an authenticated user to query the course completion progress of any other user without authorisation, disclosing private learning progress information.

An information disclosure vulnerability in Koollab LMS allowed an authenticated learner to obtain correct quiz answers from the course status endpoint without completing the assessment legitimately, compromising assessment integrity.

An authentication bypass vulnerability in Koollab LMS allowed an unauthenticated attacker to take over any account, including administrator accounts, by supplying a valid user UUID without providing primary credentials via the 2FA validation endpoint.