CVE-2026-63231 Post-authentication SQL injection vulnerability
Authenticated attackers can exploit SQL injection in Koollab LMS to read the database and steal JWT tokens for account takeover.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-63231?
CVE-2026-63231 is a high-severity SQL injection vulnerability in Three Learning Koollab LMS, published on 29 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A post-authentication SQL injection vulnerability in Koollab LMS allowed an authenticated attacker to use an error-based SQL oracle via the face-to-face runs update endpoint to read the entire application database and obtain valid JWT tokens for account takeover.
Weakness: CWE-89
Which versions are affected by CVE-2026-63231?
How do I fix CVE-2026-63231?
No fix has been published for CVE-2026-63231 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2026-63231 being exploited?
There is no known exploitation of CVE-2026-63231 in the wild and no public exploit code.
Sources
Also known as GHSA-7q3f-f53f-7cpq.