CVE-2026-63239 Hard-coded AWS IAM credentials vulnerability
Hard-coded AWS credentials in Koollab LMS allow attackers to access S3 buckets and SQS queues, exposing data and enabling malicious actions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-63239?
CVE-2026-63239 is a medium-severity vulnerability in Three Learning Koollab LMS, published on 29 Jul 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
A hard-coded AWS IAM credentials vulnerability in Koollab LMS allowed an attacker to access shared multi-tenant S3 buckets and SQS queues, exposing sensitive data and enabling malicious content injection, job manipulation, or email interception.
Weakness: CWE-798
Which versions are affected by CVE-2026-63239?
How do I fix CVE-2026-63239?
No fix has been published for CVE-2026-63239 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-63239 being exploited?
There is no known exploitation of CVE-2026-63239 in the wild and no public exploit code.
Sources
Also known as GHSA-4fpv-9r28-747f.